I kind of thought that the 110 and 210 were staying on the side of not to complex as I am not that serious a runner, but like it and have done a few races.
Ah thanks Jay I hadn't quite figured that out! I'm not sure how as have spent hours looking at different ones! Think I'd rather the 210 because of that.
WFB, that is good advice and have been doing something similar, using my ipod touch with the nike plus app for a while, although it is very inaccurate, I found it quite helpful for when I started. Now looking to upgrade to something better.
Thanks every one been very helpful!