I don’t like it apart from the second movement, which I like a lot.

 

I do like it, and find the overall mood of the piece fascinating. It seems to have a reputation of being a happy-go-lucky work, mainly (I suspect) because of the last movement, but to me there's a lot more than that going on this piece. Even in the last movement I get a real sense of tears behind the smile. The Richter version I've heard (there's more than one, I believe) is a very fine one for sure, but I've imprinted on Clifford Curzon's venerable but still marvellous reading on Decca.

 

There is a little known recording from the early '70s by the then young Soviet pianist Aleksei Nasedkin that is absolutely superb and sold me on the work. Was issued in the US. on Angel/Melodya (EMI).

 

I've listened to this sonata for years and never found it difficult to wrap my head around the first movement. The first recording I ever heard was by Wilhelm Kempff, but my favorite is one by the young Vladimir Ashkenazy.

 

The first movement is to jaunty for me, too bouncy. Just not the sort of music I like.

 

It's my least favorite of the late-ish Schubert sonatas. The first movement is rather "brutal" (apparently Schubert's inspiration was Beethoven's op.10/3,i) and Schubert did a similar style better and more compact with the Wandererfantasie.
The finale is rather trivial, even for Schubert sonatas that seem to have only two finale options, either a "tarantella of death" like in the c minor or a "Viennese Kaffeehaus/Heurigen Rondo with a few dark intermezzi. I like the slow movement, especially the ending but it's also behind other late Schubert slow movements for me.
I'd rather have Schubert finishing the "Reliquie" D 840 which I find a far more interesting piece than D 850.

 

The D784 is also great.

 

Yes, I prefer 664 and 784 to 850.