John, your time in the US is showing, you're thinking of Crown Lager not Carlton draught..
Re beers on my one and only trip to the US I set myself a task to try as many US beers as I could.....the only one I really liked was Moosehead...then I found out it was Canadian.
I agree with one of the other posters James Squire beers are waaay up there...and they're brewed by a, wait for it, a trans located Yank!