I'll go for the Ballistix I reckon. Be good to see what they can do, and they'll give me pretty much the same performance as the Corsair XMS Super Ninja CL2 OMFG LOL WTF CAS2 Pro Alpha, or whatever they are calling their RAM these days.
And £173 isn't an amazing amount for a gig of proper high performance RAM. Also, its Crucial, so you know its free delivery, life time warrenty, and the best RMA service in the universe, end of story. Well, in my experiance anyway.
Lets 'ave it!
EDIT - Also, if I don't get it, Knoxy will have to remake my sig, and that will get on his tits.