The Via board in the Everex PC is slightly different from the board you can buy separately from ClubIT.com. The Everex board is a PC2500G, where the ClubIT board is a PC2500E. I've used 2 Everex boxes for projects (PIAF, Win2003 Server), and 2 PC2500E boards for projects (PIAF, Ubuntu Server).
There are a few differences worth mentioning, the E having an edge over the G (Everex).
They do take different BIOS updates. Both do have updates to those I received loaded on the boards I've used so far. The updates are posted here:
http://www.idot.com.tw/en/downloads/
Add-in RAID cards do not work in a G, but do work in an E. I tried both a RocketRaid and a 3Ware, and neither worked in a G board. The G would not load the card BIOS to allow it to boot. I can confirm the 3Ware cards work fine in the E.
The Everex systems would not recognize high density memory modules; 1GB modules with chips on only one side of the module (8 chips) were only recognized as 512MB. The solution was to specify low-density modules. I used a module recommended by Crucial (Micron) Support to fix the problem: CT12864AA53E.K16FK. The 16 at the end means 16 total chips on the module. It's possible the latest BIOS for both boards addresses this density issue, but I no longer have a 1GB high-density module to test. I think this was stated earlier in the thread, but the max memory for both boards is 2GB (2 X 1GB).
The E uses the 4-pin P4 connector from the power supply, where the G does not; I don't know what accounts for this difference. I would think the use of the P4 connector is smarter than not using it, even on a light-duty board like this. It might buy stability in systems where the PS is powering add-in cards.
Although I do not own one (yet), one of the new generation 80+ efficient power supplies would be the perfect compliment to these boards (the PS in the Everex is a standard design). The article below suggests that an 80+ unit must be sized properly to achieve that 80%+ efficiency rating in actual use.
http://www.silentpcreview.com/article773-page1.html
For this Via board in many PIAF configurations, that would likely mean nothing larger than a 250W. The article is about a 220W FlexATX design, but Sparkle does make a 250W ATX 80+ unit.