I have tested many Socket A mobos for my personal system, and have always gone back to the ABIT KT7 or recently the KT7AR. I built many systems with the ABIT, and have never had any issues with them.
I picked up an A7V133 along with a few other mobos a couple of weeks ago to test, and needless to say, the A7V133 has found a home in my primary system. I had an initial issue with running 2 256MB sticks of Infineon, or 3 128MB sticks of Mosel Vitelic not counting the RAM amount correctly, but solved the problem by installing 3 128MB sticks of Crucial single sided CAS2 PC133, while still using the BIOS that increases memory performance.
The A7V133 has been the fastest and most stable board that I have used to date. I am running the Crucial RAM @ CAS2 & FSB at 148, with my 1200 T-Bird @ 1405MHz, 1.80V. I use a SoundBlaster Live, and did not have to disable SB 16 Emulation, USB ports & my powered hub with 2 USB/1 serial/1 printer port works well, and other than an issue that I have while attempting to use my MS Optical Trackball USB mouse with the PS/2 adapter without going buggy, it works great. (I am back to using my non optical MS Trackball PS/2 mouse with no trouble, until I find a fix. )
A7V133 Sandra Scores
CPU....3957/1935
Memory...602/684
MM.....7885/9587
HD (RAID0)....36894
Content Creation Winstone 2000
A score of 49.4 (one of the highest I have seen)
Anyway, the A7V133 is a fantastic board, and is smooth as glass, whether performing my normal everyday business tasks, or hardcore gaming. I will be 100% satisfied when I can get my optical Trackball working correctly using the PS/2 adapter, or just giving it a try on a USB port alone (I have not tried this yet due to a busy schedule)