With my motherboard now ordered, I have three components left to buy: RAM, PSU, and CPU cooler.
I'm focussing on the RAM for the moment. From what I can see DDR3-1333 and DDR3-1600 seem to be similarly priced. I've especially noticed these two kits:
Kingston 4GB (2x2GB) DDR3 1600MHz HyperX XMP i5 Memory Kit CL8(8-8-8-24) 1.65V
http://www.ebuyer.com/product/174325
£87.66
4GB (2x2GB) Corsair XMS3 DDR3, PC3-12800 (1600), 240 Pin, Non-ECC Unbuffered, CAS 9-9-9-24, XMP
http://www.scan.co.uk/TodayOnly/Index.aspx
£85.09
I'm inclined to go for the Kingston kit with its tighter timings, but since it's i5-labelled, will it still work in an AM3 board? I'd have thought so but would like to make sure I'm not missing something.