Did you get your second card? Nice.

I'm getting GTX performance with my COs for $300 less though, which is good enough for me.

There is currently one SLI setup that is a very good overall buy, two 7800GTs, preferably EVGA CO cards. The others are only worth considering from a pure performance standpoint, regardless of bang for the buck, unless you get in on a good ebay deal. Two X1800XTs may also be worth a look as a super high end setup in the near future, if the master card prices come down to $500 and Crossfire gets its bugs worked out.
you've had trouble with Asus? I've used *thinks* probably about 6 or maybe even 7 ASUS boards, and never had a problem. the rest have been a bit of everything. I used an Epox last, and an Abit before that.
I used an A8V deluxe and an A7N8X and they both had cold boot crashing problems and caused slight interference on any sound card I used. I had to spend almost a week tweaking the A8V to get it stable enough for normal windows usage at stock speed, while the A7N8X's CPU fan controller was messed up and the onboard LAN broke down after two weeks. So I decided I would rather try some other brand this time around.

Incidentally, the board I had before either of those (and is still in service in my retro gaming computer), an Asus A7M266, has had none of these issues.