I had a KTM LC640SM - absolutely superb!! Reliable and really well built it was way quicker on A and B roads than almost anything else (in the end I took it on Sunday blasts rather than my Ducati 748 - it was way more fun and quicker) - the only downside - it's the worst thing ever for the health of your licence!!!
Best fun you can have on one wheel...
They go best with an aftermarket pipe - I had a remus, and the right tyres; it's the only bike I had that I didn't want to changesort in any way (pipe excluded) - I looked long and hard at other supermotos, the Yam was next best IMO but was really happy I went for the KTM in the end - get one.....