The EZ (Subaru's flat six) is pure engineering gold. What it isn't is capable of good fuel economy. The 2015+ with CVTs could maybe get 25 mpg by themselves, but no way you'd get that towing or loaded down.
However, if you want to tow, it's probably the engine to go for. The power delivery is intoxicating - so much smoother than the four cylinder cars. You should look at a 2010-2014 Outback 3.6R. It can run "as recommended" on 87, still has a traditional 5 speed automatic transmission (likely better for towing and offroading) and the extra displacement will help when towing. This is the last good big Subaru in my eyes.
Don't discredit older Subaru's either. They're arguably better built. You might want to do some research on Subaru's build quality as of late. My sister for example had the short block on her 2014 Forester replaced under warranty for excessive oil consumption. It's also stalled on her while on the interstate twice. I've heard and read similar stories. Pure anecdotes of course.
Think of it this way Subaru builds 4 cars.
The BRZ
The Impreza
The Legacy
The Ascent
The Forester is just a boxy body on an impreza
The Outback is just a Wagon version of the Legacy
Yes the last best Subaru is likely the very last 5spd AT H6 3.6L which was redesigned after the very lousy 3.0H6. The 3.6 was /is an excellent engine.
The CVT I had one kinda ruined a number of things the servicing of the front diff and cvt at local shops runs risk of a screw up that kills the cvt, add that parts quality inconsistency and Subaru won’t fix or eat the repair cost unless you had cvt / diff dealer serviced and my local dealers all think $450 for 30min and $90 in fluids is acceptable not!
plus the cvt stalls out on technical terrain or even pavement edge in a parking lot.
So yeah 2010-14. 3.6L 5spd AT only one I recommend after 20yrs and 300,000 miles of Subaru ownership. Nope don’t any Subarus now. Too many serious parts quality issues in the new ones and my really terrible dealers! Even our VW dealer is hugely superior and more fair on service costs than our local 5 Subaru dealers.