I'm migrating from a High Roof LWB 140 Manual T6 to a High Roof LWB 177 Auto TGE. We've had LWB T4s, T5s & a T6 for twenty years so just getting used to the extra 6 feet of length plus the Auto transmission is our challenge.
Comfort wise the TGE with the comfort seats etc, is as good or better than the T6, as above the length needs more thought but the driving position is higher and with a larger windscreen, rear camera and bigger mirrors it's just a case of getting used to it. The auto box is nice especially when compared to the Beetle (avatar) with crash gearbox and cable brakes!
177ps is plenty (the current T6 is a 140 and its processor T5 was a 180), I don't know how the fuel consumption will pan out, time will tell on that. The road noise, even in an empty van, is not excessive although I have a few rattles to get rid of.
Overall I like the TGE, SWMBO will come to her own conclusion when she has driven it a good few miles, normally she is happy with hundreds of miles behind the wheel of the T6.
PS
@Rustic12 my previous LWB T5 now resides in your home town.