Like the title says, is there any really noticable performance difference between the 2.26 and 2.53 processors? I think I'm getting the 2.26 and going to bump it up to 4g of RAM. Should the machines be pretty comparable then? The most intensive thing I'll probably be doing would be creating the occasional movie in iMovie and editing photos. I know I can bump up the RAM for about ~$70 or so, and I'm not too concerned about the smaller drive. I can upgrade that eventually if it doesn't meet my needs. I just can't see spending an extrax $300 right now for the slightly faster procesor, unless it's really worth it. Thoughts?