Well I have an EPOX 8rda+ board which you can get from newegg at around $90 shipped. This was my first overclocking experience and with a little help it was very simple. I went with the EPOX board simply for the fact that I didnt want to pay for features that I would not use, things like serial ATA etc. Both the EPOX and Abit boards are the two best Nforce2 boards out there for overclocking. The EPOX had a small problem with voltage adjustments for some users trying to get to a 200FSB this of course was with earlier revisions which are no longer on the market.
However some users still cant hit 200FSB or higher with out physically modding the board. Abit had the same problems with their earlier revisions as well but the 2.0 took care of that. Overclocking on my EPOX was extremely easy with the XP1700 chip, I put some Artic Silver on it dropped in. I locked my AGP bus at 66mhz which on the EPOX board in turn locks all the PCI cards there to-----for stability-----. Turned off AGP fast writes put the mem timings at 100% of FSB and then started to move the FSB up in increments of 10 testing with the Prime95 software for stability. I hit a wall at 12.5X175 FSB but I let it run for a few days to burn the chip in. Then I lowered the chip multiplier to 11, uped the core voltage to 1.65 and the memory voltage to 2.99 and started to crank the FSB. It would boot into windows at 11x210 or 2310mhz but it wasnt stable.
The Prime95 software torture test will let you know if you have a stable overclock, if you get errors at all then it isnt. With mine at 2.2ghz Prime95 ran for 24hours and no errors, I plan on playing with it some more after I use it for a month or so but right now its 100% stable and with my GF4Ti4200 I get 13,500ish 3dmarks.