If the TU would be your only bike, I would really recommend that you try one before you buy. I have a Suzuki GN250 , which is basically the same bike, as my work bike for a daily 40 mile round trip commute. As a commuter it's adequate, if not quick. It's very reliable, it's good on petrol - an easy 70MPG plus- and it actually handles quite well.
However, if it's going to be your only, do everything,bike i would think again. It's slow -it'll cruise at 60 but there is very little speed or power after that. Overtaking anything going more than 50 mph takes a LOT of planning - you'll spend a lot of time following slow cars and lorries. It's physically small so most cars treat it as a moped and try to bully you out of the way - you'll be tailgated, cut up and generally hassled. Don't even think about going near a motorway as at anything near motorway speed (when it eventually gets there) it rattles like a bucket of bolts and drinks oil faster than a 2 stroke! Apparently some one rode one around the world....he must have had plenty of time!
Sorry if this sounds a bit negative - as I said at the beginning it's an OK commuter, but if it was my only bike I think I'd buy a Volvo!!!