I've had 3 over the years. Two RT's (one with 2 cyl and one with 3cyl) and currently an F3T. Prior to 2014 they used 2 cyl motors then went with 1330cc Three cyl They still use them in the RT's and F3's. A real workhorse and pretty much problem free. When there is a prob, its usually electronic. My '16 F3t has been totally prob free. I like it much better than the RT's as it is lower, floorboards and handlebar can be adjusted to your needs. Being lower, it seems to handle better too. I think some new RT's now have adjustable handlebars.....just not up on new ones. They also make a couple of smaller ones called "Ryker" ( or something like that) with 650 motors, CVT transmission. Folks seem to like them. Tell him to look up
"Spyderlovers.com" forum and he will find more info than he can deal with.