I owned a Thorens TD-124, a great TT. I highly recommend one if it great shape, re-conditioned ....
I have had several wood bases made for several TD-125 someone knowledgeable owns. I am not impressed with what I see/feel , I cannot imagine it could produce the solidity that the TD-124's heavy platter does: but I have never heard one.
Never heard a GT-2000, always impressed with all details I read about. The link at vintage knob gives info on several variations, take your time, clarify what you might buy, OR, wait for another specific version to pop up.
You may need a 100v/120v transformer, like I do for my JVC TT81. A small transformer, as long as decent quality works well, no hum, no need to get some big expensive one. amazon has one for $40. delivered, VCT VT-200J