Personally I like all the early stuff the most. Check out "In Durin's Halls" and "Across the Misty Mountains (Far Far Away)" and "A Viking's Journey", those are probably my favorites. There is A LOT of material, check here to keep track: https://www.discogs.com/artist/338452-Uruk-Hai
If you're serious about putting in the work to learn how to make music. I'm going to offer (musescore)[https://musescore.org/en] and its built in instruments as a solid alternative to a full DAW. You can make some fantastic modern DS with it, though you might struggle to get some of the old skool sounds if that's where your heart lies.
But more than any of that writing music on a stave using musescore will vastly accelerate your learning music composition over the piano roll type input that most DAW offer by default.
On that note, get yourself following a beginner's guide to music theory, and once you have the absolute basics start learning Bach style harmony for a SATB chorus (though you don't need to stick to voices in your music, just the 4 part structure). If you get this under your fingers you'll be writing some excellent DS in no time and you can go back to looking at different tools, instruments, and compositional techniques.
Expect it to be hard work but if you can stick through it that will be an efficient route to truly understanding what you are trying to make.
I have a Teac W-890R-B Double Auto-Reverse Cassette Deck.
I've had cheaper ones but I found they would chew tapes.
Never had a problem with that deck.