I would make sure your dad gets some a bike you like so you can borrower it onces in a while.LOL

 

What are your Fathers main uses for the Quad?

Sport/Utilty, I would say the Kodiak, Wolverine,
Grizzly or Sportsman 500

Mainly Sport,some Utility, I would have to say
Maybe the Explorer 400, I have some doubts
about a Two Stroke, Chain Drive for Utility
purposes, but that is just my opinion.

All Sport, only 4X4 choices are the 400 and 500
Scrambler(s), then its up to the Buyer to decide
should it be 2 or 4 Stroke, I have been told performance is comperable, my sources may be wrong though.