I'm guessing some may say go for speed, but really, Pentium is just a better family all together. Now, if they were equal in speeds, I would just go with the Pentium, but with the difference, I'm not sure which to use. Also, I've read that the Celeron D has twice the cache from previous models, but I don't know how much the Pentium has to use for comparison. So should I go with a slightly greater speed and possibly more cache? Or should I go with the better family of processors?