In Sharon Green's Challenges, the competition has started, and Lorand, Rion, Tamrissa, Jowi, and Vallant have to learn how to become a perfect Blending, a union of their powers and minds, to compete properly. Dissension within their group is making that difficult, and it doesn't help that the testing authority and people from the five's pasts are sabotaging them as well. The five are desperately trying to out-think their enemies and win power, freedom, and their lives against a deeply corrupt system.
The tone of the writing improved for me and sounded less off, though I did have a major "oh really?" moment when Jovvi and Tamrissa realize that the five of them having sex with each other improves the Blending. It leads to some really amusing discussions though, as well as more interpersonal problems as Lorand and Vallant refuse to trade women out of their sense of manly honor. There's less repetition now that the five spend more time working together as a team.
I'm really annoyed that some of the resolution of Tamrissa and Vallant's problem with each other comes about through partially stripping her of her ability to really consent to things. Vallant seriously needs to die, high-maintenance jackass that he is. (Why couldn't the book pair Tamrissa off with Rion? It's not like Naran is a real person.)
I enjoyed these books a lot more when I first read them in my early 20s, but they're still popcorn reading, fast and mostly tasty. But Challenges ends on a major, mean cliffhanger, so have the next book handy to pick up right after.