Hi, came a bit late.
Try the Amadeus Quartertt (DG The Original series), with Emil Giles!
Is a reissue of the 1975 recording; Amadeus second recording of the piece. Sound quailty is better and actually quite fine. Pentatones SACD sound quality is of course better, but comparing both performances is almost unfair.
I have both discs, and keep playing Amadeus version while Pentathones remains on the shelves. Eventually i will give it another try given superior sound but never get too far listening. If you want to feel the Trout, give it a try. In my opinion Giles never sounded as good as when he played with this legendary quartett.
And as an extra you get as a (filler...?) D 810 "death and the maiden". This one is an earlier 1958 recording, but sound is Ok and again, the performance, one of the top 4 or 5 of this masterpiece ever made.
Hope you enjoy
Best
Eli