I priced the plug in advanced at around 42k out the door. 4-5k in rebates. The Prius v is about 37k out the door. No rebates. Is there any reason why I should not get the plug in raises the different rims??
Are you talking about the Prius v or the Prius Five? In terms of Five vs. Advanced, they are basically the same trim level (though plug-in gets heated seats). Does the five still have IPA in 2012? Also, that's a $5k difference which you will never recoup on gas savings alone. If you have local rebates or incentives, that picture might change.
If you mean the v station wagon, it has substantially more cargo room. If you do not need cargo, I would get the PHV