Although theres a big thumbs up for the Empire E-flex (Myself included would big up these goggles) - Goggles are really down to what you like.
My E-flex are the nuts and you can change face plates and lenses really easy. I do like the new JT's however at the weekend I tried on a team mates and although these felt a little smaller, the foam I thought was a bit rubbish and I know that my team mate has only used them 3 times. Was considering a change to the JT's but with this foam issue and the fact the the lense change is a B***ch means I wont be changing.
May have to buy some more E-flex and change around again.
Am also considering Double Strapping as Gadget has said.