Since Goodreads may very well scoop this up and deposit with reviews of other editions entirely: This is a review of the Signet Classic "Idylls of the King and a New Selection of Poems: 150th Anniversary Edition" (Amazon and iBook catalogue title), a 2003 re-issue, with a new introduction, of a collection first published in 1961. The cover and title page just say it has "A Selection of Poems," with no claim of being recent, a point to which I will return.
The review was originally written to go with the Kindle edition on Amazon, and addresses its features: but the book is also available, at the same (presently low) price on Nook, Kobo, and iBook.
I have no idea of what "150th Anniversary" the cover celebrates -- none of the dates it suggests, counting back from 1961 or 2003, seems important to either Tennyson's life or the publication of the "Idylls" (Tennyson issued it piece-meal, and re-arranged it more than once before it reached its final form in 1885 -- the first "installments," including the ending, had appeared in a collection of his poems in 1842.)
If you like (some) Victorian poetry, and don't have this material, this would be a good place to start, although hardly the only edition of "Idylls of the King," or the only one with additional poems. For those who are uncertain, there are free versions, mostly by way of Project Gutenberg, also available for Kindle (and, apparently iBook, Kobo and Nook), entirely free, or even lower-priced than this one, with various extras, like more-or-less appropriate illustrations. You may, of course, decide to stick with those.
"Idylls of the King" is *the* Victorian treatment of the Arthurian legend, a top-seller in its day, and one which also assured the renewed popularity of Malory's "Le Morte D'Arthur"after that had gone out of print (there was a long gap from 1634 to 1819, then another, shorter gap, until demand for the book increased.) The renewal of interest in Malory gave some readers access to a more genuinely medieval, if late, approach to the Arthurian story, which as a coherent whole dates back to the twelfth century (parts are much earlier). "Idylls" is heavily idealized, and romanticized or sentimentalized (depending on your taste), beyond anything in Tennyson's sources.
A lot of the British Arthurian art of the later nineteenth century (which pretty much all of it, the subject wasn't that popular before) is visibly dependent on Tennyson's versions of stories and characters, which at the time must have helped public recognition of what the pictures were about. Nowadays the titles may only produce a blank look, which is a shame: some of the paintings are quite good, and better if they make sense to you as part of a story.
To avoid spoilers, I won't give detailed views on how Tennyson handled some of the Arthurian material, beyond saying that I like some of it, and have reservations about a few passages which seem to me to strike a false note. (I remember a complaint about a movie review from someone who didn't know what happened to the Titanic, so I'm not assuming everyone reading this knows the outline of the Arthurian stories.)
So much for the "Idylls of the King," except for a technical point covered below.
The "New Selection of Poems" title in the Amazon and iBook catalogues (only) is a little confusing. The selection is no longer new: it was made by the late Oscar Williams for the *1961* paperback edition: he was a well-known editor of poetry anthologies at the time (and, according to Wikipedia, a minor poet). His selection misses some obvious titles, like "The Charge of the Light Brigade" and "Locksley Hall Sixty Years After" (the obvious -- and disappointed -- sequel to the famous "Locksley Hall," with its optimistic view of the future). This leaves room for some lesser-known short works, like "Flower in the Crannied Wall," and the missing items are easily found elsewhere (especially, these days, on line), although only if you already know about them, at least by title.
If you have one of the many reprintings of that 1961 edition, you don't need this one, unless you are especially interested in the new Introduction by Glenn Everett, or really want it on your Kindle, Nook, or Kobo device or app, or iBook app. Fortunately, the digital editions are all quite inexpensive at this writing.
I have only checked the Kindle version. The transfer of the 1961 text seems to have gone pretty smoothly, and been well-edited, as there are no obvious garbled words or strange strings of characters leaping from the page -- New American Library (of which Signet is an imprint) seems to have taken some care to get it right.
Unfortunately, that care did not extend to the hyperlinked Table of Contents. It has NO links to the twelve individual "Idylls" (poems), just to their three main divisions, as "The Coming of Arthur," "The Round Table" (containing most of them), and "The Passing of Arthur." This is a considerable annoyance -- one can search for those buried as "The Round Table" easily enough by title, but you have to know the title already. Anyone reading them straight through might want to bookmark, highlight, or annotate the beginnings for easy reference in the future. (This oversight cost the Signet Kindle book part of a star, as my real rating would be more like four-and-a-half stars).