There is nothing wrong with them except ...
.. that they are cheap belt drive turntables and can not compete with decent Direct Drives in terms of speed stability. These Regas looks like a toy and act like a toy, a mediocre turntable for those who's trying to save on everything. These turntables must be avoided like any cheap modern belt drives, especially when brand new SL1200GR is just $1700 (and that plastic Rega toy is $750).
As a drive Technics SL1210mkII is superb and the OP already have it, just add new arm with decent cartridge. Technics can be upgraded anytime, the Rega can not be upgraded, it's a junk, sorry.