I'll vouch for the Noctua fans and coolers. I use their fans in my systems and use the NH-U12P cooler in my main system. I think the coolers are well made, the fans quiet and move a large volume of air and though somewhat pricey, well worth the price.
Given the "horsepower" of even a moderately priced system these days it shouldn't be too hard to come up with top notch components without breaking the bank.
SeaSonic M12II 620W, ASUS M4A87TD EVO AM3 AMD 870, AMD Phenom II X4 925 Deneb 2.8GHz, Crucial 8GB (4 x 2GB) DDR3 1333, SAPPHIRE Radeon HD 6850, Kingston HyperX 120G 120GB Solid State Boot Drive, WD Caviar 1 TB Storage Drive, LG DVD-RW, Samsung SyncMaster 226bw 21" LCD, Windows 7 Home Premium 64bit