Catzilla is new (And really cool) but as such in it early days I would guess is buggy. Futuremark's 3DMark line is best for gaming performance testing, and PCMark is best for daily driving, boot times, responsiveness etc.
Heaven is really just for Tessellation (DirectX11) demonstration and comparison
775 System (Overclocking Platform): Q8400/Q8300/E8400/E7400/E7500 - GA-EP45-UD3R v1.1 - 4GB (2x2) OCZ Reaper HPC DDR2 1066 CL5 2.1v Corsair TX-750w
Gamer: Core W3520/i7 960 D0, EVGA X58 Tri-SLI, ThermalTake Armor A90 modded, 3x4GB Corsair Dominator DDR3 2000 CL9, Corsair HX-750w, MSI GTX660 Twin Frozr
Server2012: Q9300 - 8GB DDR2 - Asus P5QL Pro - Corsair CX430 - Mirrored 2TB Seagate's with 2TB WD cav for fileshare backups, 1TB WD for OS backups