I have tried the Premium Hilton, one came with my 18mg Prem tobacco sampler. I am taking it for my daily vape tomorrow, in fact. It is strong, European, with a slightly sweet finish. Have not tried the old Hiltons, so take that FWIW.
Full disclosure, and I'm risking an epic smack-down here, I do not like the 555 or Dunhall that much at all <ducks>...or the Kant <dodge>, but I can see the comparison, since they are all based off of the same tobacco company's brands (British American), or their subsidiaries. The Hilton was my fave of all those.
The Prem RY4 is just awesome tho!