On the whole topic: I don't really see this as a competition as such, but rather a good mean of incentive to learn myself how to arrange and mix/master a song with a definite deadline.
What I really like is getting comments on how other people viewed what I worked with, and I do think that commenting when voting should be more or less mandatory, just a few lines about why you liked or didn't like the song and especially some constructive criticism.
In my opinion, what makes Gameboy's comment especially insulting is that I have never seen him enter the compo himself. I might be wrong there, but to criticize others (in a derogatory manner) without participating yourself is just plain hypocritical.
I see remixing as an art form where you try to improve, emphasize or alter what is already there amd where you can bend a song to your liking. If you don't like instrumental music, you improve it by adding a stunning vocal track. If you hate pianos (who could ever do that?!), you replace it with a spanish flamenco-guitar of your choice etc.
However, at least Gameboy was honest; I mean, I dislike slow songs as well as songs in a major key, I'm sure that affects my voting, and I'm pretty sure that everyone has likes/dislikes like that and that our votes are coloured by it. It's more the way he said it than what he actually said that makes me a sad panda.
Also, I would prefer not winning any PRC, because there's a lot of agony in finding a good source. (But of course, it's outweighed by the very rewarding feeling to see your source refined into unexpected new pieces of music).
Sidenote: I guess I should have voted this time, because I wouldn't have had OneUp in the top 3. ^^