Chris,
I think you have had loads of good advice from other TMer's so I can only add that I have had 3 new Morgans and they have been no more or less reliable than any other new car. Yes, you have to take care of them and how you use them but that's part of the joy and having spent somewhere around £50K, you would want to look after it wouldn't you, not drop shopping bags on it for instance.
I have also had an SS100 ( with another one in build ) and they are certainly a lot rarer than a Morgan with approx. 350 built over the last 26 years so a very bespoke car.
If you can get to see a copy of the December issue of the JEC ( Jaguar Club ) there is a nice SS100 for sale in NZ which would be a lot closer for you than getting one from the UK and it may well conform to Aussie regs.
