This is a short list of Intel motherboards. Intels are usually regarded as the most stable mobos, but lately stability has declined somewhat, according to reviewers at NewEgg. You need to match the memory to the board to achieve stability. Look up lists of compatible, tested RAM.

This list is ordered from more expensive to less expensive.

DP55WG, +has fw, no video card
DP55KG, +has fw, no video card
DP55SB, +has fw, no video card
DP55WB, +has fw, no video card

DQ57TM, has IDE, VPRO if you get a i5-670, 660,650 or i7-870,860,860-s.

DH57JG, miniitx
DH57DD +video
DH55HC +video
DH55TC +video
DH55PJ +video

Core i5-750 quad core lynnfield - best cpu deal
i7-860 lynnfield quad

One interesting board is the DQ57TM, which has vPro. That allows you to use VNC (Pro version) to remote in and view the boot-up process, and also mount a DVD-ROM on your machine onto the remote machine. You can boot and install a system remotely. The cost of using the DQ57TM is a higher price for slower CPUs.

Another is the DH57JG, which is a mini-itx sized board, for low-profile or smaller computer cases.