there is always someone out there to make a big fuss about what is really not that much of a problem for all examples (the guy probably subscribes to which magazine and is a life long complainer).
a mate of mine used to be a a distributor for Noble and he has sold a fair number, he is still in contact with a lot of the owners, and reckons they are still the closest thing you can get to a racing car on the road. I've not heard him talking about reliability problems, bear in mind he has sold quite a few - the problems are being exaggerated.