Yes Sir!!
Went flying with my brand new Lightspeed 30-3G's day before yesterday; my instructor was wearing an older set of 15XL's (don't know if it was an XLc).
It's impossible to describe in words how much difference there is between an ANR and a non-ANR headset in the noisy cockpit environment of an old Mooney 20G. The reason I bought the 30-3G's in the first place was because I had tried out those very same 15XL's, which he had borrowed from someone else, several months ago.
During the flight we exchanged headsets and I would venture to guess that my new set reduced the noise by at least a third over the old set. However, having said that, there is such a tremendous improvement in the 15XL's compared to non-ANR, I wouldn't hesitate to recommend them.
The only downside I can see (hear) to the ANR's is that if you turn it off (or the battery goes dead) it gets awfully loud real quick; maybe even worse than a non-ANR. Don't know if this is typical of all ANR's or just the 2 models of Lightspeed's I'm familiar with. It could also be the shock of going from tomb-like quiet to "noise overload" that makes it seem worse than it really is.
Anyway, I don't really care; I plan on carrying plenty of extra batteries at all times. When you're old and deaf like I am, it's a real pleasure to be able, once again, to understand what and why the controller is screaming at you. Before the new headset, I'd just have to mumble "Roger" and keep on doing whatever it was that I was doing. Those guys sure seem to get upset easily.
Are you aware of the rebuilt and warranted headsets that Lightspeed sells on their website and the 5% AOPA discount available from some retailers? In any case, if you don't want to put out the cash for a brand new set, buy the 15XL's, you'll never regret it and they seem to hold their value very well if you decide to trade up at a later date.
Good luck.
.