Points calculator

Hey all,
I'm looking into getting a points calculator, is there any difference between the older version and the 2009 model? I know the 2009 one has a 7 day memory in it, but i'm not too bothered about that.
Any help would be great. x

They haven't changed the way points are calculated so, as long as you don't want the memory feature, you might as well get an old one if they're cheaper.