Thanks for that trudd, I thought somewhere around 2k would be about right.
Bikes I ride most often at the moment are a Daytona 955i which has 149bhp and a crap rear brake, I tried a bit of practice on it and even on just a tiny bit of throttle it just overpowers the rear brake, and a Versys 650 which runs so roughly low down that it's very difficult to stop it surging at very low speeds. Can't help thinking a mid size 600 is the ideal weapon, ie FZ6, I've had a couple of them before and whilst I don't regret getting rid of them (had both early model and S2) I look back and think just how good they were. Did track days on them, toured, all sorts and they were great at everything with the added bonus that other people didn't expect them to be any good.
So I'm having a go in a couple of weeks on my Daytona (for the lack of having anything more suitable) and then over the winter I might have a look for an FZ6 again.