Yo Dr O!
Yep. Strictly speaking in relation to producing electronic/dance music within a computer-based environment, my first port of call would always be A/D D/A (after processing power of course). Get down to your local Pro-Audio store and demo any of the Apogee Rosetta range linked to an Apogee Big Ben, then tell me the difference is only subtle!
You will only benefit from using high quality conversion. The only downside is the cost. Most of us however would much rather spend our dosh on the latest greatest synths and funky outboard, as opposed to a rather boring looking Big Ben.
The MOTU 828 MKII is a great piece of kit - but I have read on many forums that the pre-amps are not the best. If you can afford that little bit more I would go for the RME Fireface 800. The vast majority of opinion would say that the RME is the best in its price range. (At the moment!)
Check this link out: -
http://www.blacklionaudio.com/828.htm
Apparently these guys will do a modification for your 828 which is supposed to make a "night and day" difference to your output signal. There has been a very positive response for this mod on the web - I think it will cost you about ?110.
Fuck me... Acid music!! Takes me back to my bandana wearing days dancing to Mr Lee - Pump up London... 'av it.
PS
http://cgi.ebay.co.uk/RME-Fireface-8...QQcmdZViewItem