This may be a somewhat colored perception, but it seems to me that there is a threshold at the $200 mark.
At $200 and lower, average or even sub-par drivers are prevalent, and true ASIO support is hit and miss.
At $250, you jump into better hardware, with near universal ASIO support.
On that note, I can also highly recommend the Akai EIE Pro.
Awesome unit for $250.
You say you are holding out for an 8 input unit. That's all well and good, but you may find that 4 inputs will serve you 99% of the time.
The Akai(or a similar unit) may seem overkill for your current needs, but would cover some serious mileage for your future needs, and you might not need to buy another unit at all.