THIS For an extra $0 to $200 you can get 900's, which have far more features. You could even get 850's for even cheaper than that, and 800's again even cheaper if you want a large platter. A benefit of second hand equipment (Especially pioneer) is that it holds it's value REALLY well, (E.g. cdj 1000 mk3's) So that way if you decide you don't like it, at the most you might loose $100 when selling it all off again. As for audio quality, 320kbs mp3 is fine, and sounds good on a club system. You could always try and step up to the higher quality's to give yourself an edge over the competition in some way. Use AIFF instead of wave though, as it is the same quality and allows you to store ID3 tags such as names, artists and cover art. I would also have to recommend you get a program called mixed in key, I can honestly say that it has made me a better dj, and made it alot funner by taking out the trial and error of track selection. Good luck in your choice man! (P.s. second hand 850's are amazing value for money if you get a pair in good nick second hand) Edit: Just saw your bit about a mixer, the djm 400's and 350's are very nice, The only two main effect you need to have IMO is a manual filter and a echo. Manual filter is amazing at letting you get really smooth fade out's for transitions, however this only seems to be standard on the djm 700+ mixers, (Except the djm 250, but that doesn't have echo, you could always sacrifice it) One option is just to get your nice cdj's then get a cheapie newmark mixer, and save 1k for a djm 800, which are AMAZING mixers, and have everything you could possibly want.