A fascinating debate which appeals to me as I have the same dilemma.
A Z3 250swb will cost about the same as a tvr 300Om / Tamar to procure
TVR cheap to run / service, possibly Tax Free, great fun to drive, not many around.
The issue for me is that the Tribute Z3 SWB is new, I like the shape, and I could use it every day, my wife could drive it and there are some modern bits like central locking and air conditioning, ABS etc which make it more practical to own.
Maybe the answer is to buy one of each, still less than the cost of a new focus.
