Jay,
In addition to the Midget I show and the Spridget I'm currently building, I have a '60 TR3. The '73 Midget is quite refined and comfortable...as Midgets go...the Spridget will be a barn stormer...the TR3, well, a knuckle dragger...literally.
With the long swoopy fenders, a hood (bonnet) that blocks 50% of your view, and cut down doors, they are quite...distinctive...always draws a crowd.
Add in a few holdovers from a bygone era...push button start (funny how they're now the rage...again), flip type fuel filler cap, bonnet bolts (Dzus), hand crank, side curtains, twist door handles outside/cable pull inside...this list goes on and on. Mine happens to be an overdrive car and that's a plus. The TR3 is an absolute blast to drive; if you haven't, do so before you make up your mind.
I bought a decent driver a couple years ago and while prices seem to be inching up, they are really no more expensive to maintain/restore than a TR4-6 or MGA, B, or Midget.
The BIG difference is when you attend a decent sized mixed LBC gathering...like the Euroautofestival. Lucky to see 1-3 TR2s-3s.
Ray