I want to unlock my 2400+, but my XMS3200 cas2.5 will only do 175 at max timings (12.5x175 = 1187MHz ).

My KX7 is not volt-modded, and I don't intend to do that anytime soon, so what will run best at 2.85v max? I've been looking at Corsair or Geil PC3500, these are both rated 2-3-6-3 1T @ 200MHz, the same as PC3200 cas2. Is it worth paying the extra money?