I'd recommend the ASUS A8N-SLI Premium, which is based on the A8N-SLI -- my A8N-SLI's been running stably in my system for about 4 months, overclocked/not.
The only possible snag is that my mobo cannot use 1GB memory modules with 128Mbit chips, so you may have to either look hard to find one that use 64Mbit chips, or use 4 sticks of 512MB RAMs.
Other than that, I use 2 X 512MB Corsair Value Select RAMs overclocked 1:1 @ 233FSB, running stably.