There are lots of alternative campervan makes out there, based on all kinds of base vehicles. Obviously you pays your money & makes your choice, but for me it was as much about the VW heritage, scene & that intangible feeling you get from all that has gone before....
I would never criticise or try to put someone off exploring other marques, all I can do is reflect personally that I'd wanted a VW camper (not necessary a Cali) for some considerable time before we were in a position to have one, an itch that needed to be scratched if you will, and it is everything I'd hoped it would be.....
One interesting further observation, is a Mrs H comment not long after we'd taken delivery..... "We should have done this years ago when the kids were smaller, the Beach is such a fabulous family tool"
In answer to the original post, I'm not sure I agree that Solar is an acceptable alternative to a mains hook up...... but that may be down the amount of electrical equipment we seem to take!!