Dynaudios's are very popular among Trance/House producers, a BM6a's will definitely be a step up from the mackie's sound wise and accuracy. but you better demo a few different pairs at the store and decide for yourself, they might not fit you ya know ... don't fall for a speaker hype, one it might not suit you ears while the other will...
don't forget about room treatment, your speakers will be almost useless if you don't hear whats EXACTLY coming out from them..
