I would prefer what you consider the lesser card for the cheaper price until the real DX10 cards are on the market.
Define "real" Dx-10 cards, please.
I thought Dx-10 was mostly about those unified shaders, which are supported by the G80 chip.
Then why are you having problems trimming out FSX and why are you searching for settings and tweaks? I never said the combination was bad but from an engineering standpoint and from someone who knows you're system is no where near what the professional graphics industry considers 'high end', what you have is what the industry and FSX considers a low/mid-range tower. The only way you would be a solid mid-range in the professional graphics world is if you were running a E6800 with a 8800GTX. :D
"Professional industry" and "consumer" can't be compared.
The industry has the money, the consumer doesn't.
Why would you ask that?
Well, you kind of bash the 8800 series?
Anyways, I'm gonna bug out on this one. I don't want to get infected with the bad feeling of a mispurchase of hardware.
Or to put it differently: The king wants to sit comfortably on his throne.