whoa, these are pretty good lemme comment some...

jj2 theme: this is awesome, i think the piano is too dark atm - boost highs maybe?

tubelectric: I'm sure I've heard this one before, I think you've posted a link to this one on IRC once. It's pretty good, I like the 303 playing the 'ieee.st' melody and the drums. imho the dance-ish lead should have more character (boost the highs and mids?). i don't really like the way the gated arp is louder when its pattern starts. also you need some better guitar than a sytrus inferno ;p the guitar is also kind of quiet.

colonius: I also like this one, the drumloop sounds nicely phattened, I don't really like the lead's autopanning (the patch sounds really close to the original colonius lead though!) and the scratching. can't really comment about the bass right now (my speakers are (-)ing up - i'm catching some (-)y radio noise which is also quite bassy and i can't turn it up)

dark knight: this one is my favourite so far. I really like the bagpipes and the orchestral sounds ((-) that reminds me i need to get some bagpipe and organ samples/soundfonts)

diamondus: the worst one in my opinion. the snare totally lacks character and isn't that a standard FL hat? i like the leads and the bass though.

just one question: where did you get the brass and bagpipes from?