Well, I run both Pioneer and Technics turntables and the Pioneers nearly always have a higher build quality. This is all my own personal opinion so I hope I don't upset anybody
It depends what price range you're looking at but the bargain PL-12 is a good one for the price, good quality arm and motor. Then you get the likes of the PL-512, 518 etc with the solid laminated chip plinth, the arm on these isn't quite as good but they have nice rubber feet and again a good motor and I like them for the price, have restored quite a few. Then you get the PL-112, 115 etc. The use of plastic creeps in here and the build isn't as heavy as the earlier ones but they are still solid and have a similar tonearm to the PL-12. All the turntables listed above are belt drive, so simple and will run for years and years without trouble.
Then you move into the bigger bucks and the higher end direct drive turntables, like the walnut coloured PL-400, 500 series with brushed aluminium control panels to match the other vintage gear. I'm running a PL-550 at the moment (it's made my Technics SL-1500 redundant

), got it on pure silver cables and the sound is awesome. Direct drives
can be more trouble if you buy untested on eBay, they can blow fuses and won't work properly if the switches/controls get dirty. Not a problem if you can sort it yourself but worth thinking about if you need a tech to fix it.
The long and short of it is: don't touch anything manufactured after about 1982, if it has a straight plastic tonearm and skinny black/silver plastic case then it's a no-no, the best ones have a silver S shape tonearm and were built before about 1980.
Regards, TiberiuS.