To start, I know there are many knowledgeable people on this forum who offer good advice.
I have enjoyed my 2005 XC70 for almost two years now, and was really happy when I got it. But...my real desire was to get a V70R. Well one just showed up at a local Volvo dealer. So I am opening myself up for pros and cons for each vehicle.
My 05 has 118K miles on it. Great condition.
The V70R is a 2004 with 77K miles. It is AWD and has the third seat.
Factors to consider, I have 4 kids, but my wife does have the minivan that accommodates all of us. We live in NH so we get snow and there are potholes. I have a short commute to work, but a couple times a month I have long trips. I also believe life is too short to drive something you don't love. I have yet to even drive a V70R, I only know what I have read about them.