Henrys are about the only leverguns I see anywhere these days...but I've seen plenty. I'm a Marlin guy, so I haven't paid much attention to the specific models, but most of my LGS visits in the past couple years have started with an excited look at a whole rack of leverguns, only to disappointedly learn that they're all Henrys.
I have several Henrys and like them. Given the option, however, I'd buy a Marlin if I was given the option of buying a similar rifle from each company. I want a 336 in 30-30 and I wouldn't buy a Henry 30-30 instead if I found one in the store.