Why not ask for a test ride?
I test rode one from Premier Bikes in Didcot around 2008 I think, took some getting used to, at low revs in traffic it sounded and felt like the bottom end was about to explode but improved dramatically when spinning faster. Handling and brakes were excellent, but I rode it along the same roads as I'd ridden my own bike that same day and it certainly felt (and was, by a good amount) slower than on mine. Maybe 5 years on a ZX-10 had spoilt me, I don't know. That said, they perked the engine up a bit when they updated it in 2009, and when I've encountered them on trackdays they certainly aren't slow!
