3.0e memory

I need some help with what memory would be best.I have a 3.0e on a A-Bit IC7-MAX3 right now I have 2 gig of memory (you know that cheap corsair the lowest priced 512x2 for 175.00) it is overclocked to a 3.41 running at 45 idle.

So what would be the best 1gig setup for this hopefully under the 300.00 dollar amount.

Is this memory a good OC'er I found this at komusa.com and can I use higher MHZ than 400 with this MB it only shows to run 400 MHZ 3200 but if I can go higher I will.So the ones below are any of them worth it.

1GB kit (512MBX2) PC-3200 400MHz Dual Channel DDR Hyperam
On Sale: $177.00

1GB kit (512MBX2) PC-3700 466MHz Dual Channel DDR Hyperam
On Sale: $199.00

1GB kit (512MBX2) PC-4200 533MHz Dual Channel DDR Hyperam
On Sale: $258.00