My 2 cents, I'm Pro tuned stage 2 (well I was stage 2 until a week ago). My 2014 XT runs great. I've been fortunate that i haven't had any problems with my SJG. I know some guys have had issues with boost leaks (the Danoz fix), CVT issues, or even engine problems. The only problem, knock wood, that I had several months back was a bad steering vibration which turned out to be a worn lower inner control arm bushing that was fixed under warranty. Well, that and my ECU being bricked, twice(!) when I was up in Ravena NY getting my Mishimoto j-pipe installed and getting Pro tuned. My XT (with EyeSight) is kinda famous in that it was the reason Cobb @Cobbtuning immediately flew a team out to Ravena NY to meet with my tuner Ray @turbotekray to troubleshoot my ECU. After Cobb reprogrammed my ECU, Ray was able to give me a great tune. I love how fun my XT is to drive! Cobb then placed an urgent update on their site for anyone with a 2014+ XT with EyeSight. Some here felt my "numbers" were low compared to other tuners, but you know what, my Forester feels great and more importantly, Still runs great. Now, the reason I removed my Mishi, is because I'm selling it to my mom in law and getting a 2017 XT, and that's where my j-pipe is going, (along with all the other upgrades/suspension bits I installed - I wouldn't want her to be able to keep up with me on the Belt Pkwy lol).
Having said all this, my XT felt stronger after I installed the Cobb Accessport with the 93 map. It was, to me, a very nice improvement. It was faster off the line and had a stronger midrange. Well worth the money I spent and I wound up paying full price because it wasn't out yet for the SJG when I was at the 2014 Wicked Big Meet.
If you can wait, some authorized dealers have sales throughout the year, though the best prices are always at the WBM. My bro just got one at this year's WBM for his 2016 WRX and saved $100! As fxterrific said, the Cobb stage 1 map is a safe performance upgrade and I agree with him.
I'm not recommending you go stage 2 like me, maybe I'm one of the lucky ones, but I trusted my tuner and I take care of my ride. I'm very religious with my oil changes (3000k) and I add Techron to my gas every other fill up; and if you think I baby my XT, I don't. Here's a video of me in front of my bro's WRX at Englishtown a few weeks ago.
Whatever you decide to do, have fun and enjoy your XT!
https://youtu.be/z4zWaarRm0Y