Reliability? I know, and cheap, low dig at the bike, but are they as reliable as a modern Japanes/European 4? They've come on a lot, however I think they still require a bit more fetlling than the others.

On another note, I've never understood why someone hasn't run the Aprilia RSV's (V4's) around the TT. Or maybe their geometry is too track biased, rather than road focused (but the again that hasn't stopped Honda NS500's or YZR 500's being raced at the island).