You are going to get a lot of Subaru love with a question like this- as was mentioned above Subaru owners tend to be very cultish. For my part, no chance to even look at the ascent yet, but I have had 2 Outbacks. The first was a 2001, bought as a used rental car with 19,000 miles on it. Subarus peripheral warranty is weak, at 3/36k. For our part, the stereo died at just over 36k, BUT, our local dealer is excellent. I went in to complain and the service tech, unasked, said, "Oh yeah, I remember you mentioning that at your last oil change....." and a new stereo was installed at no cost to me.
Then the headgaskets blew at just over 100K. By that point Subaru had extended the powertrain warranty to 100K as this was a known issue. Even though we were over 100, the dealer helped us work with Subaru of America, and after several phone calls, emails, etc... Subaru agreed to cover us anyway, including the rental for the week the car was down. Drove that car for 13 years, and that is the complete total of issues other than consumables.
Second was 2007 with a manual, took a long time to find. That one had issues due to what I finally determined was an unreported front end accident. Kept wearing out CV joints, finally a mechanic took a caliper and measured the front axles, and found out that they were just a couple mm out of spec - cheap knockoffs that looked like factory parts. I would still have it, but we found that driving a manual in today's world is not quite as fun as it was when we were kids.....
We would have replaced that one with another Outback, but by then they had grown too large in our opinion, and the Crosstek just felt too slow. The combination of the 2.5l and the manual transmission was quick, by Subaru standards.
Both were better on snowy/icy/nasty highways than any other vehicle I've ever owned.
Every time we need a new car, we start at our Subaru dealer - they don't always have what we are looking for, but I would not hesitate to buy another one.