Re: i7 New Build
Asus has done me right so far with Intel based rigs, I don't have a problem with other brands really but I tend to stick with what has proven reliable to me.
In the end with x58 it basically boils down to whether you are going to be overclocking to the very edge of stability, then you may want to research a little more to suit your needs. For the most part they will all achieve very similar "24/7" stable overclocks for a particular cpu so that shouldn't be a major concern, especially with air cooling.
i7 Beast: Asus P6T Deluxe, Intel i7 920 21x191 (4000) HT on 1.3875v, Swiftech GTZ/D5/BIX2
6GB (3x2GB) G.Skill pi Black DDR3 1600, ECS 9600GT
CM STACKER 810, PC Power & Cooling Silencer 750
i7 Game: Asus P6T, Intel i7 920 20x180 (3600) HT on 1.275v, TRU-120
6GB (3x2GB) G.Skill DDR3 1333 7-7-7-18, MSI GTX260 OCv2, Dell 3007WFP LCD
CM STACKER 830, PC Power & Cooling Silencer 750
AMD: Biostar 790GX A2+, PII X4 940BE 17x200, Freezer 64 Pro
4GB (4x1GB) Ballistix Tracer DDR2 800, Powercolor 4850