This is a great question and I do have a strong opinion on. Yes, you’re right on the feature side of things, but I’ll expand beyond that.
I want to get this out of the way first. When we say something like, “the BHK 300s sound better than the new M1200.” Yes, of course they do, they should. By no means is that saying 1200s are bad amps. This is obvious, I just want to make the point early.
The way I would describe the Strata is it’s a very fun integrated. I listen to a lot of different music, and not all of it is mastered/recorded very well. From the likes of Radiohead, Funkadelic, Kings of convenience, 90s hip-hop, through to Nick Drake, Nat King Cole, Eddie “Lockjaw” Davis, and Bill Evans (no particular order). Sure, some of these artists have some damn good recordings, but let’s be honest, some of Radiohead’s stuff is pretty rough around the edges, but I still absolutely love it. Kid A is one heck of an album and is one of my most played of all time. Strata makes Kid A sound amazing! All of it. Even some of the rougher tracks. When listening to Strata, all music sounds good. Throw on L-O-V-E by Nat King Cole, you better believe your toes will be tapping.
However, Nat’s lush baritone voice may be lacking a bit of that richness. The backing trumpet might seem a little too far away. The imaging might seem a bit blurred.
This is where the GDAC and S300/M700s really start to shine. The imaging is more focused, it’s deeper and easier to believe you’re in the audience. Nat’s lush voice suddenly sounds like it’s coming from a center channel speaker. That trumpet solo has the impact it should, and you can hear the slight mistake you’re pretty sure he makes when it was his time to shine.
This system is quite revealing. When you listen to well recorded albums, you are simply engulfed in the music. Listening to albums like Kid A is still an incredible experience, but instead of completely enjoying the music, I’ll subconsciously put on my audiophile hat and start critiquing minute details I would otherwise ignore when listening through the Strata.
To go back to my original point, this is not to say either are bad. Obviously both are darn good and are just simply different.
Sorry for the long winded answer. I love both systems and have a pretty strong opinion about them. Hope it helps.