This machine...
is truly a joy to vacuum with. The PN-4 is so easy to pass over the carpet. The hose that it came with does leak, but, fortunately, I already had a vinyl hose on hand to use in its place. You can tell by looking at the PN-4's underside that it was designed for shag (deep pile) carpet. (The PN-2, which looks very similar, was more designed for low-pile carpet, as was the PN-1).
Even though the Super J had a more powerful motor than its similar predecessors (the 1205 and the Golden J), it still purrs like a kitten. I really do love this vacuum cleaner...it's among my favorite Luxes!