EX – A top read; lacked any noticeable flaws. VG+ – Close to excellent with only one or two small quibbles. VG – Enthused about it; very well done for its genre. G+ – Enjoyed it very much. G – Enjoyed the book. Okay – Enjoyed it but with significant reservations. Only okay. Poor – Wasn't awful, but wasn't good either. Finished it with difficulty. NR – Did not work for me. Would not recommend this book to others. DNF – Awful. Read more than 50 pages but did not finish. DNS – So badly done it did not even survive the 50-page test.
VG+ – Close to excellent with only one or two small quibbles.
VG – Enthused about it; very well done for its genre.
G+ – Enjoyed it very much.
G – Enjoyed the book.
Okay – Enjoyed it but with significant reservations. Only okay.
Poor – Wasn't awful, but wasn't good either. Finished it with difficulty.
NR – Did not work for me. Would not recommend this book to others.
DNF – Awful. Read more than 50 pages but did not finish.
DNS – So badly done it did not even survive the 50-page test.