I'm thinking about this now. I think I've done three roulettes. Right now, off the top of my head, I can probably name you five songs that have really resonated, and three of those would be "that song by... uh, the guy who I think used to sing for Helloween. Crisco. Costo. Kiske. That was awesome."
The ones I can name outright: Ben Folds Five, "Battle Of Who Could Care Less", Nightwish "Ghost Love Score", and Devin "Deep Peace". I can't remember the Kiske tune ("Do You Remember?" It had "Do" and "Remember" and a "?"). GREAT song. That's not to say there weren't other great, great songs. I got a song by Evergrey that, according to Katt, "slaps". I got an Ayreon song that made me go out and buy "The Source", which rules; I don't remember the song I got, just that it was so good I overlooked the over-rated Russell Wilson singing on it (I'm kidding; it was Russell Allen). I got a Star One song that I'm going to buy the album once I pull the trigger on the deluxe version; I can't remember the song title, but it was the "A Clockwork Orange" song. That's not to say that even more bands didn't resonate. I loved the Night Flight Orchestra songs I got, but I'd be hard pressed to name the tunes without looking it up. Moon Safari same thing.
I would hope that no one takes offense to this; it's not personal, and you didn't waste your time at all. I may, at some point, go back and revisit my roulettes; that wouldn't be a chore at all. It all gets assimilated at some point, it just takes time.