With the Z87 line, I look to their mobos first, Z77 I still think the Rock had the best handle on the chipset and CPUs, X79 again 1st Asus and then up in the air, haven't found other mobos that handle 64GB of DRAM well, and only the Rampage that can really handle 64GB of 2400, am looking to get my hands on one of the new X79 Deluxe mobos, on AMD mobos I look to Asus or the Rock, sort of a tossup but at the 990chipset - Asus, GPUs I've long been a fan of EVGA, but since the CU cooling design came out from Asus, I look to them more often than not first, then EVGA (on nVidia) then GB - with AMD cards, Asus then, Sapphire then GB....I generally will look at other brands also, especially if a client has a request for something in particular on GPUs, but on mobos, it's only Asus, the Rock or GB, if someone wants to insist on say MSI, BioStar or another brand, I'll just refer them to someone else if I know of anyone that will work with the mobo wanted, or just tell them sorry, no can do.