Spaceweasel is a backpacker and he's often torn. I've had this talk with him. He takes the lighter hammock on his hikes, but uses his XL for lounging and on car camping escapades (if memory serves). But he also has a pair of hammocks for every day of the week... getting him nailed down to "you can only have one hammock" is like getting a pro golfer to choose only one club for his bag.
I'm a "one hammock for most uses" kind of guy. I love the Camper XL and find its comfort is amazing. That said, I'd go with the Camper for a good mix of portability and comfort (this is that "one hammock" I'd pick if I picked "one hammock"), though if I leaned toward comfort only, I could see the case for the XL. And bigger guys? They just need the XL. 11 feet x 72 inches is massive comfort even for taller folks.
For what it's worth, my current pack contains a double layer Hiker Lite which started off as a prototype tester, but it grew on me. After a year of use, I am considering swapping it out for another prototype if I find time to make it.