After reading the benchmarks for the new 8150 fx and seeing the sandy bridge i7 2600k kick its butt in almost every single one I decided to go Intel instead of AMD. I dont mind spending a little extra for the processor and motherboard. If I go Intel should I use nvidia instead of ATI. I was planning to use HD 6970 crossifre in my AMD build. If I go nvidia should I use 570's SLI or pay the extra $140 a card for the 580's? Also should I use a 2600k SB i7 or 960 BF?