Schubert wrote the String Quintet shortly before his death (at age 31) in 1828; one can only imagine what treasures might have followed had he lived another 30 or 40 years.
Unlike Mozart's quintets, Schubert utilized two cellos instead of two violas, giving the work a rather different (and in my view, richer) texture. Critics describe this quintet as "one of the most compelling in the chamber music repertoire". It is certainly a very expressive, unusual piece, quite unlike anything else he wrote; it's also quite long (54 minutes). I had to listen to it many times before I came to grips with it (a bit like late Beethovian sonatas and quartets), and now I quite enjoy it. At $7 for 76 minutes of music (quintet and trio), you should judge it for yourself.
Most recordings include only the quintet, but Naxos gives us the String Trio as well. Written 11 years earlier, it is much "lighter" and reminiscent of his violin sonatas; it is a quite enjoyable composition.
The Ensemble Villa Musica performance and the sound quality are both very good. BTW, the best-known performance of the quintet is probably the hard-to-find Stern et al. 1952 mono recording on Sony.