Now you are hooked - there is no going back.
I have a GT UL and it is comfortable enough to sleep overnight (for me). However, you will find, if you compare with another hammock, that the GT is a bit on the small side. Works OK for me as I'm only 5'6". It seems the longer the hammock, the more comfortable the lie.
BTW, it is very easy to make a structural ridge line. Just use a length of braided mason line 80-85% of the overall length of the hammock. It works really well.