I'm curious, what do you hate about iTunes? I've heard this before from other people. I actually paid money for iTunes back when it was shareware, before Apple bought it, it was Cassidy & Greene's Soundjam MP, back in 1999. It was quite a bit different then, but I've owned every permutation of it. The only issue I ever had was just getting used to the idea of playlists. I wanted to find the actual file, in the folder and organizational system that I set up, and play the MP3 file. Once I learned to let go, that I have better things to do with my time than get OCD with my files, I have enjoyed it.
I think the current iteration is pretty bloated though. It could use to be re-written from the ground up. I've heard the Windows version is faster, because it's not as old.