Hi, im new here too, Had a full license now for ummm 18 years.
First bike, a fs1e but in mini cafe race style with rearsets, clipons and a A100 engine bored to 120cc with matched spanny the lot that I did all the proper calculashuns for valve openings and cone lengths etc in college (still said 49cc on the book though *whistle*). Used to terrorise the local 125 mob on this tiny little flea of a sports ped, until it blew up again (which it did almost weekly), and had to carry a few spare magneto woodruff keys under the side panel at all times

Best bike, hmm most competent bike has to be my bimota YB8, 1000 yamaha exup engine tuned a bit in a superb chassis that saved my neck during the sillier of some of my antics, so good Im almost afraid to saw it up to make it better (y'know a blower on it would be nice, but I probally will just opt for a more tuned engine) Most fun probally my kawasaki turbo when its running strong with a fresh turbo. Most lifesaving my sp400, because I had it through the lean times and the good, and in the lean times it ran very very cheap but was still good fun, Im treating her nicely now, although Im on my 3rd engine so far, its probally the bike Id part with last out of my fleet too cos of the times Ive had on it...