Someone moving from XT to the 818 will have made a big jump in performance. And that is, indeed, a very good deal. But I remember the disappointment from us AND Chris when it was learned that an early implementation did not include Sub EQ HT. So some disappointment that it is now being omitted after a good solid period of it being included is understandable.
Of course, this "disappointment" is pretty much limited to enthusiasts on fora who have watched the evolution from 2EQ to XT 32. The A/V buying public won't know the history.
Extra annoying, but maybe a testament to the marketing power of Audyssey, is that, IMO, they are using it to step people up to the next unit.
Welcome back, Keith.