I looked at them early last year when buddy was shopping for a new TT.
Despite their using some modern materials like Azdel, they are built very cheaply and many small detail din't seem to be thought out well. I was really disappointed.
The other thing we found was that they were kind of trashed inside. Lots of broken items and damage to surfaces and edges from rough handling - and these were straight from the factory according to the dealer.
But if you can find a nice one in good shape that has everything you want and the light weight thing is important to you, go for it.
JMHO.
Scott