X38 based motherboards are soon to take a nose dive in price since the chipset is due to be replaced as the enthusiast offering by the X48 which we have already managed to get our hands on and test in both DDR2 and DDR3 flavours. Overclocking on these boards has shown drastic improvements by passing 550MHz FSB at these early BIOS stages, and we are soon to see more.
GIGABYTE's X38T-DQ6 may be a good board in a few months; with a new revision we should see DES come into the fray to reduce power consumption when at low CPU loads, as well as a price drop because of the introduction of the X48. However, at this late stage of the X38/X48 crossover, it's hard to recommend many X38 boards unless they are cheap.
On the whole, GIGABYTE has done a good job, but if you're after all the features on the X38T board I would advise the wait till X48T-DQ6 hits with its DES and possible further push on overclocking. We may see a new king soon.