Aerobat
Class A all the way
I wouldn't call the 2000 "low-end." Yes, its base is plastic, but so what? It's still really well built, and looks awesome. I love mine.
The 1900 might have a better tonearm in theory, but in practice, they sound exactly the same. Also, the 1900/1950 has an odd tonearm lift lever that is notorious for seizing up.
The 2000 is a simpler machine. Interestingly, I think it might be the only Technics DD whose platter doesn't have a magnet. Does the original SP-10 have that?
Everything is relative. I've owned both the 2000 and 1900 and have listened to my neighbor's 1900 extensively. They are high-end compared to a lot of inexpensive current stuff for sure.