reddog,
Ditto on the Lynx. While I haven't used the Aurora personally, I have used their LynxONE products a lot and can tell you that the drivers have got to be some of the most rock solid Windows drivers ever written. AdamJay is right on as far as price/performance. I can't think of many/any other cost effective options which can compete with 16 Lynx channels in this price range. They also have great tech support & cust svc, and repairs (when necessary, which is rare) are very affordable. I blew one of the channels one of my boards and they only charged $60 to repair it.
So I say you have a pretty good track record to give them a shot for your business.
As always of course, YMMV...