I picked up a Bahco interchangeable handle and some blades from the Amazon outlet site - can't for the life of me remember Bahco's name for the product line. It's a really comfortable handle which accepts a number of blades. I've got the large RH handle, and normally take a size 10 glove, it really is the most comfortable handle I've used with the real benefit that I can fit the equivalent of half a dozen saws in my toolbox. And, for any south paws among us you can buy a left handed grip.
Just found a link:
http://www.its.co.uk/pd/EX-244P-22-Bahc ... 244P22.htm it looks like for the most part the blade is the same price as the plastic handled equivalent, so you're paying a £10-15 premium for the handle to buy into their system, as I said worth it for me for space considerations, the comfy handle is a bonus.