1) Have you checked that traktor supports motorfaders? I'm not sure where you can get short alps motorfaders, that would be similar to the length of a crossfader, though you might get one as a spare part for a Yamaha 01V or 01X or something. I think the motor mechanism might be a hindrance to quck crossfading action, it would put too much friction/weight to do 'the crab' and stuff like that. 2) I don't know, I've used both, in commercial digital mixers, but one of these was a Yamaha 02R, which has crappy motorfader algorithms, so I can't tell. P+G is just perfect! though I don't know where to get them. (possibly available as a spare for the digidesign 002 or similar source , but probably expensive) 3) yes 4) soft takeover works so that when you change screensets in your software, or patches on external hardware, a midi message will only get sent when the knob goes past the current value. In my experience, this is only worth using if it is implemented in the software itself, otherwise you have 2 sets of data to load and save each time. The Novation Nova Synthesiser has soft takeover built in, I think that all hardware and software should!