OCZ Reaper DDR2 1066 or 800 better?

1st some basic info about my build.

ASUS P5Q Deluxe LGA 775 Intel P45 Intel Motherboard
Intel Core 2 Quad Q9450 Yorkfield 2.66GHz LGA 775 95W Quad-Core Processor Model BX80569Q9450

Which is better here, 1066 or 800!?

OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory
@ 5-5-5-18

Or


OCZ Reaper HPC Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory
@ 4-4-4-15

Video editing, photos, running two monitors to play poker, but no real "gaming" going on...


So which mem is better or another suggestion?

I've also considered
CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
@ 5-5-5-15


Thanks!