If anyone knows a better MOBO, or can shine the light on my dilemma. I would greatly appreciate it.
A lot of dual-socket boards do not have onboard sound or very many back-panel USB ports because they're intended to be used as server motherboards. Most of those boards do have a few USB headers so you can connect a few more ports with a USB header bracket. You can also buy PCI and PCI Express sound cards and USB cards relatively inexpensively. Just figure on buying those and select a board based on other factors, such as size, amount of RAM it supports, etc.
As for vendors, I have used Intel boards and Supermicro Xeon boards before. Both are fine. I haven't personally used a TYAN board but a guy I knew had an Tyan Athlon MP board and ran that thing for a very long time with no trouble. I haven't used nor seen anybody use ASUS boards, but their reputation is apparently somewhat sketchy for server boards- lack of updated BIOSes, flaky boards, and such. That's what I've heard, so take it with a grain of salt.
If I had to choose among those boards, the Supermicro X8DAi would be my choice over the X8DAL due to the increased amount of memory slots (12 vs. 6) and a chipset that provides more PCI Express lanes (Intel 5520 vs. Intel 5500). However, the X8DAL doesn't look like a bad board at all, as long as six memory slots is enough for you.