Dealer support - After HD Honda would have to have the second largest dealer network so with any Triumph you are going way down the ladder in number of dealers. ( The nearest three dealers to my remote location are 150-250 miles. I have the trailer thing figured out.)
Read the Top Dealer Thread for input on dealers.

Ride - Based on reviews of the 08 touring, (I have an 05) I expect you will be pleased with the ease of handling. The bike has never been considered top heavy because the central mass of the motor the crank is very low in the frame.