Not a big fan of the 2500M (WAY too heavy immasculated TR6 engine up front causing handling issues like it did in the TR6... and I'm a TR6 owner) which was a TVR compromise because their preferred (and much stronger) Ford Essex 3L V6 was not Federalized. Makes a nice noise though.
The early wedge shaped 280i cars seemed to have some teething issues and were only a 4sp... but the cars were pretty much sorted and very desirable by the Rover V8 powered 350i... which came out just after TVR stopped US sales. There are a handful here.
In the UK these cars are not seen as desriable as the later V8 TVR cars and as such are a great deal, but the oldest of them are just now 25 years old and importable. I'm only waiting for the dollar to rebound a little before picking one up for about $5000-7000 and importing it...
I wouldn't turn down a previous generation Euro-spec 3000 either... though I prefer an open car and those are rarer.
Bill