From a coaching perspective, I really like level 6 for boys. And I really like level 7, with the exception of vault. From a developmental perspective, both levels have very well put-together routines with very sound progressions. There aren't any skills in the routines (except for the Yamashita vault at level 7) that I don't like; it's all developmentally important stuff (though I will say that the level 7 pommels routine is brutally difficult, and probably the biggest reason why many boys skip level 7 entirely -- you can put together a decent level 8 pommel horse routine that's nowhere near as hard as the level 7 routine).
On the girls side, I don't know the compulsories all that well -- my gym just does prep-op -- but I like the level 6 bar and floor routines alright.