EMU Support is not the greatist but you can get great unofficial support from these guys:
Multimedia Production Forums - View forum - E-MU
It's really like an official EMU board, everything you need there, there a couple EMU guys on there also who are very helpfull, some good guys. It's been used for many years by some to get great support for EMU products. There is also unofficial drivers that can be had.
EMU 1616M is still a monster of a work horse for it's price and has good caps so they wont go (Unlike the 1820m caps that do blow but are easy to replace)
The best interfaces where the 1212m & 1820m and now the much improved 1616m, anything else is not the best from EMU, especially 0404, just pretty standard, and they cant be judge on those petty cards though I understand about the lack of support regarding those products but don't not get a 1616m based on what's being said here, it's a beast of a card, with great drivers and sounds allot better then a delta 1010, comparable to Lynx sound wise....
So right now their best interface by far is the 1616m, and it has great drivers for all operating systems. Though the 1616m is the last of the best from EMU, their future is up in the air and has been for a number of years.
I'm still rocking a 1820m here, and never needed official support, replaced the caps my self from the help of the forums above, and used drivers for win 7 which work like a treat. Id never go back to the likes of a delta 1010 which I owned before as it's just not up the sound quality which the M series EMU converters offer.