Kampnnut - I have a Sony MZ-N505 MiniDisc player, and I use it while riding my EVO '98 FLHTC, which probably vibrates more than your bike if it's a TC88. I either keep it in a jacket pocket, fanny pack, or the optional belt clip holder which I purchased (about $15).
I have not been able to make it skip on the Harley! But, I don't know how well it would work mounted to the handlebars. I still am searching for the "perfect" place to mount it on the bike, where I can get to it easily.
If you do alot of long trips (as in days or weeks), I think the MiniDisc would be a good option since the discs are very small so you could bring along lots of pre-recorded music.
I also like the fact that it uses regular batteries rather than a built in rechargable, so if you run out of juice on the road you can just pop in a fresh cell.
I record from the optical output of my home CD changer which produces an excellent sound.
Hope that helped
