Corsair or OCZ memory?

I'm currently choosing the memory for my build. In the past i have skimped at this point and its cost me, so im doing it properly this time around. I currently have the followin options in mind:

1. 2GB Corsair PC2-6400
2. 2GB OCZ PC2-8500

They are both the same price (purchased from Aria), but obviously the OCZ has a higher clock speed. I've heard very good reviews about both setups, so im not sure which one to go for. Ive chosen this motherboard:
http://www.aria.co.uk/Products/Compo...roductId=23584

However, this will not support the OCZ, and so i will have to alter this too.

Any help appreciated.

Go for the 2Gb of Corsair, you won't really notice teh speed increase of the OCZ tbh, it's not worth spending the extra money on the mobo