I like Pristine because the restorations he provides by himself, Mark Obert-Thorn, and others, make historic performances much more listenable --- best of both worlds.
I also recommend, rather than narrowing in on a few composers, just listen to a lot of different stuff and see where your ear takes you. I recall you're averse to streaming, but here it's where it's your friend. For $15 you can get the Berliner Phil digital concert hall for a month and just plow through their archives. You can also hear a lot of stuff on youtube.
One fun thing to do with it is to compare different artists in the same piece. I recorded off of youtube a playlist of performances of Stormy Weather. Of course youtube will never be your go-to source, but to build experience, learn new stuff, you can't beat the price. And there are some things there that I haven't found elsewhere, like the Bostridge-Drake performance of Schubert's Winterreise.
OK: Winterreise - One more thing. It is easy to overinvest in the orchestral and concerto literature to the neglect of smaller ensembles, chamber music and solo performance. Schubert's Winterreise and his C major quintet are ahead of the big symphonies on my desert island list. Some nights you just don't have the energy for another big bash; also the big orchestral standards are sufficiently ubiquitous that the ear is quickly jaded. But the non-orchestral literature is so voluminous that it is hard to know where to start. Beethoven wrote only 9 symphonies, but he wrote 32 piano sonatas and 16 string quartets. And the best of these are just as deep, as dramatic, as totally engrossing, as the best of the orchestral works.
Have fun!