My only real qualms with Subaru is the price. For a vehicle I am using chasing, I'd rather not spend a fortune on the car or the insurance on the car. And if you're using resale value as an excuse, I would venture to say a majority of people who buy a vehicle for chasing probably won't get a lot of return in selling their car. Just a hunch...
In the three chase vehicles I have owned, two have been minivans (Dodge/Chrysler). Both have served me amazingly well. The interior space alone is enough for me, but good handle, a comfy ride, and the fact that you can buy one of these vehicles for about half the price of a Subaru.
The gas mileage is about 20mpg give or take a few on either side, so its not the most fuel efficient vehicle in the world, but I haven't owned anything newer than 1996, so perhaps they're better now-a-days.
I don't know what the maintanance cost comparison between the two vehicles is, so I don't have a lot of ground to stand on there. However, given the minivan's history with transmission problems (and yes, I've replaced transmissions in both), I did pay the extra for AAMCO's lifetime warranty on the Chrysler and it paid for itself when I blew a second transmission in the van a couple years later. That said, I won't have to worry about replacing another transmission in the van, so in told, I paid about $2400 and have replaced the trannie twice with that.
Both my van's were FWD models and for the most part have done me pretty well. I don't make a habit of taking excessively bad roads, particularly in the van, so I don't have a strong case for its mudding skills, but all-in-all, she does pretty well. I have hydroplaned her at 60mph causing me to spin 540 degrees into the mud on the side of a Kansas state highway and fortunately the mud was my friend and probably prevented me from rolling. Axel deep, no amount of wheel-drive would've got me out of that (Norton County officials were awesome that day).
Where my van's driving gets tested is snow, and she does pretty well getting around. A good set of tires are unquestionably the single most important piece of equipment on your vehicle. A good set of tires will do amazing things to get you in and out of places. Don't undervalue those on any vehicle, no matter the drive.
The van is fairly high profile, but I haven't had any major issues in winds. And trust me, early season chases driving back to Colorado on the backside of some of these systems through Kansas will make I-70 hell going westbound in 50mph sustained northerly winds. The MPG gets cut down, but I'm not being blow, tipped, or scooted.
So yeah, that's my two-cents on the matter... a reliable vehicle for half the price of a Subaru is worthy enough for me.