Same for me Foamy if you want to have a go I'm always up for a ride out and my new baby just loves long runs, as above really it's not till you realise how other bikes are put together that you see how simple it is to work on these things. Seat off tank off and it's all there for you to fiddle with, take it out for a ride and your going to be sold on it, they are a bit heavy to chuck around tho but otherwise not a thing I can say that Tasky won't already have said. The owners club are very good at getting parts and they are loads cheaper than the other dealers out there even beat the prices on EBAY quite a lot of the time.
PS just wondering, are the 1100s the ones with the steel rear swing arm? If so you need to check for rot in the arm, some, the 3CV,has the ali arm which some have swapped over to. Also check the rear mono shock is ok and the adjusters actually work (very expensive) front fork seals and steering head bearings as they are a heavy bike and a lot goes on at the front and finally if you have the VENTED disc at the back check to see how much meat is left on it as it's U/S at 7.5mm mine was down to 5.4mm and a fail for the MOT. All these bit's are dirt cheap to replace and easy to get at except the mono shock.