Noble will cost you a fortune, TVR will fall to bits, Exige S will be 95% as quick without the fear that it'll kill you everytime you stamp on the loud pedal.
There's no doubt that the Noble is a thing of pure aggressive beauty, but could you really live with no boot? The footwell is tiny as well so if you've got medium to large feet forget it, and I'd definitely be looking at the servicing costs before picking out a car...
The T350 is stunning but too fragile UNLESS you can get one that has had all the required rebuilding done to the engine, but even then I wouldn't touch one if you need a resemblance of reliability. The tendency to break down is very over-stated, but it's still 10x worse than anything else you could get.
Exige S looks good, and has a very exploitable power band. It's relatively bullet-proof mechanically (I believe the oil surge issues on the early N/As was sorted for the S) and there is simply nothing in the world that drives as purely as an Elise or one the many derivatives. Well, IMHO anyway.