Sometimes I feel overwhelmed by the sheer number of puzzles, and there's so many that appeal to me that it's really difficult to decide what I should buy next.
Get a Curvy Copter! Or if you can find one the Rubik's Shells is probably my all time favorite puzzle. Try to get a new one that hasn't been "locked" yet.
And yes, I feel that way sometimes too. I hope people post the puzzles they like on here. I would be interested in some ideas myself