Office, iWork etc. speed depend on user-input (i.e. how fast you type), not on CPU. Most games won't benefit from 260MHz and as benches showed, you get ~1FPS more
You are very tough one to convince![]()
I've never spent anything over £300 of my own money before so I want to make the right decision so that I have no regrets. It looks like I will be getting the 2.4GHz so you have done a great job! Lol. I am going to an Apple Store in the summer before I buy one through the HE store online, and I think I'm going to a PC World within the next few weeks because they are less crowded and I can spend more time on a MBP.