I test rode the P200 and S8. The P200 felt like it had more power and had a much more comfortable seat than the S8. It also handled like crap. It did not like going around corners. Not sure if it was just the one I rode or if they are all like that. I picked up a new 2009 S8 today. I didn't have time to ride it very much. It seems to handle pretty good. The brakes feel fine. As for the power, I'll wait untill I get a few more miles on it (at least untill after the first oil change) before seeing how fast it will go. It's a 150 so I'm not expecting a powerhouse.
I considered the Sym HD200. The only dealer remotely close by was sold out.