I'm building a rig for a friend of mine, and I'm considering this motherboard right now: ECS NFORCE 570 SLIT-A (V5.1) ATX Intel Motherboard - Retail at Newegg.com Though, I'm unsure whether or not ECS is reliable. If I don't end up getting this board, then I'm definately going with either: ASUS P5NSLI ATX Intel Motherboard - Retail at Newegg.com Or better, (depending on whether or not he wants to keep it on a budget): ASUS P5N32-SLI SE Deluxe Socket T (LGA 775) ATX Intel Motherboard - Retail at Newegg.com Because those two are undoubtedly the best mobo's for SLI, (w/ Core 2 Duo).
ECS is a reliable brand. Several years back they did have problems, but today, you'll find them on par with the big boys.