strangely you cant really compare the two as they are 2 completly differnt beasts
i have a thou and a pointy 650 atm, and previosly a curvy, for messing about, comuting thru town ,hitting some twisties, doing a very tight trackday (3 sister for example) go 650
for touring, high speed highjinx, big trackdays (silverstone or I.O.M), taking a pillion, go thou
but either can do these quite well anyway, ones just slightly better for different reasons than the other at the above, i have toured on a 650 and commuted on a thou, done the I.O.M on both, tbh im just lucky to have both to choose from now but never had any proplems doing all of it on both,
things to note about the thou, there is no particular reliability issue with the thou (design fault) but "the knock" has been mentioned a few times by owners, mine has it and me and rictus took the engine apart for inspection the other day and the internals were mint, so it doesnt damage the bike
doing under 20mph is doable but annoying (good clutch control needed) so i just dont lol
the sound is awsome,
the torque is emmence,
it doesnt ride like a 650 so dont think it will
im not going to cover the aspects of the 650 there is a forum somewhere that has loads of info on them
hth
dave
suzukigit380 do you actually own a thou or have you just googlefu'd that