After having the Sony linear for over a year here are a few observations. Sound Quality of the table: very resonant plinth and dustcover - not as inert, nor solid as the Tecnics and you can hear it. Also, the resonant plinth allows the tone arm movements to be heard on quiet passages. Having Said that, it can still sound very nice. No tracking errors helps. As for ease of maintenance? The belt, pulleys, and lube are easy accessed by only removing the bottom cover. Not complicated. Belt really can done with no tools but a little hook or pick helps. also check that the cable is on the pulleys.
Compared to a tecnics, they are Vey pretty tables (mine is piano black) and offer usable sound. They are a little finicky at times. VTF adjustment is so involved, don't try it. Requires arm assembly removal. These are a little flimsy - the Technics are plainly more rugged, heavy, and hardy. Robust. Haven't had to do anything at all on one (30 years old) and the other got a belt and lube.
At first, the plinth mounted arm makes sense, but the lid mounted arms make it easier to clean the stylus, and it is way out of the way for loading discs. Having both, there is a reason tecnics put the arm up there.
Another consideration: the lid mounted arm may seem complicated, but it also just requires the top of the dust cover removed, not the lid itself. Very simple- about the same as the Sony, just smaller screws on the lid. Opened up it is just as easy to service.
As it is with dogs, there are really no "Bad" cartridges - Just bad setup