In reply to Tony the Blade:
Got to admit I have been swithering on this for a while. I fitted a rack to the MBK to carry some serious kit into Ben Alder last month, and it was definitely the right thing to do.
I have also fitted one to my hybrid commuter, that I do 24m hilly miles to work on a couple of times a week, and I do find I notice the weight on the bike. I am less sweaty on my back, but as I am in the National Sweating Team, that's still a fair bit as I work hard.
Can't decide which I prefer yet, but I'm going to give it a few more weeks.....