Ram- Timings vs MHZ

I was looking at Some G.Skill ram and i was wondering what the difference between 800mhz ram at CL4 vs 1066 mhz at CL5..which one would be better? are timings more important than 266 mhz? or vis versa

well 1 more timing isnt really hurting anything so I would go with 1066

^ true

because we all know im always right.