I resisted for many years, but I now think the Japanese do a great job or reproducing a "look"- and often improving on the actual performance. The yamaha XS650 was a Triumph repop, and has proven to be a versatile workhorse.
Miata is an MGB. Kawasaki Drifter... Not the real thing, but it has a good look. (In that case, I would still prefer the real thing)
I've had 2 GB500's (brought here in 89 and 90)and I love them. They can be sort of an amalgam of AJS and Norton maybe? Very light and extremely good handling. Like all bikes with rear-sets and clip-ons, they are a pain to ride for any distance.
I now own a W650 and absolutely love it. At the time, Motorcycle Consumer News and Cycle World thought it to be the Bonneville Triumph should have made- and I agree. I test rode a Bonnie with the full intention of putting down cash for it. What a snore. So- I got a primo W for less than half the money. I put an alloy tank on it and lower bars (those bars are just stupid IMO). Great power and good handling. I would ride it anywhere. Yes- prices are slowly escalating already.
I recommend the lower bars. Just get BikeMasters and shim them. I also recommend re-uhpostering the seat to even out that bump. Some rear fenders start to crack, but I suspect a Lucas-style tail light will lighten that up and alleviate some vibration (not all fenders crack, though). That bike is very popular in Europe and accessories and bits are available to change the look; cafe parts, aluminium tanks, high pipes, etc. Yahoo has a decent group.