I've done some work for seismic companies and they had foreman 450's with 10 000kms, up to 20 000 kms, with 20 000 hrs from tons of idle time, that were still working (non electric shift) and going relatively strong.
I've worked at a polaris dealer.....*ahem*..........and seen polarii with less than 2000kms that needed so much $$$ in repairs it was shocking, usually the CVT, suspension bushings, wheel hubs. not to mention how much a fan is worth when it starts to make noise.
performance wise the polaris are good, fast, and all that, but for me, I would rather take the short comings (a little slower, rides a little harsher) of a japanese quad (ie honda forman) and have something that I know isn't going to throw some surprise punches at my wallet 3 years down the road.
If he buys new, uses through the duration of the warranty and sells, Polaris would be ok. for for the long haul, pass to the kids kind of stuff.....ummm........
this coming from me, and it's only my opinion, HTH