RE: Avon tires???
There is a huge difference in Avon speedmasters and venoms. The bobber builders and custom guys use the sm since is has the vintage look and tread profile vs. performance. Straight line is fine on those tires but they dont offer neutral steering \\;\\\\\\;\\\\\\\\\\\\\\;or good cornering since they tend to track really straight and have less of a rounded profile. I run Venoms front and back on mine and they're great, very sticky. My front in fact has about 4-5k on it already and I'm sure I'll get another 5-8 out of it and probably 15k on the rear.
I'd never use stock Dunlops again...while they're hard and last long (14k on my front stocker and 16k on the rear) the grip on them sucked and they would slide easy and I found them fairly dangerous on wet roads even back when they only had 5k on them especially the front since the 21" has a very narrow contact patch.