Tandy in the 80s
Tandy was one of the regular visits for our group in Newcastle in the early-mid 80s.
On one occasion one of the party started using the TRS-80 on display (model II by then I think) only to be told, "Get away from that, you know nothing about it!"
Given that we were five students, all Computing or Maths & Computing undergraduates, and three of the group went on to get Firsts, I'd venture to suggest we knew a lot more about it than the PFY shop assistant! 1
Beyond that I never had any contact with the TRS-80, out of my price range then and overtaken by PCs later.