I've no idea what I'd replace mine with - yes you can go faster for the money, but how much faster do you need to go? It's quicker than 99% of whats on the roads, more comfortable and looks epic.
The only reason I don't drive mine more is because of the state of the roads around here, and the muppetry of other road users. (I've had her a year on the 29th and I still haven't done 1500 miles!)
Suspect others may feel the same.