Cheers guys, really enjoyed ourselves at Frankfurt, and the last day was brilliant with most of the day spent in the bitter coldness with the sun shining on our backs. Saw some pretty interesting aircraft aswell, including two new 747-8F's which really do look fantatsic with the longer engines, longer fuselage and longer wings.
Thanks for the bus info Henrik, we ended up just staying at the RWY 25L platform as it was only 2 minutes walk from the Hotel and most of the interesting stuff arrives into that particular runway. Will definately have to meet up when I'm next there, likely before your summer visit.