I used a company called Wilkinsons in Lancashire England for my tt101. They have a JVC museum as it happens
Victor TT 101 vs TT 81
I am aware of some of the differences regarding the motors of these two units, but I was wondering if anyone had insights as to the differences in sound (if any) and the differences in reliability (I'm guessing the 81 being simpler might be more reliable, however, it seems to have the better motor). Any info will be appreciated.