I agree with simple solid turntable design. I've no experience with Lenco but I have had a couple of Micro Seikis (MR611 for 20 years and now a BL51). Very solid, very well built and prices are reasonable unless you go for the Uber Micro Seikis (wonderful machines but beyond my budget). I would also add that the speed is stable on my belt drive Micro Seiki.
As such I'd say look for a good second hand Micro Seiki, what Oregon says about the Lenco's is quite similar to what I'd say about Micro Seikis. SImple design very well engineered and built.
DS