Ive had both in my room and the PB13 is alot cleaner and is not as boomy. I get no port noise unlike the PC13 and the deep bass is more pleasurable. The PB13 is definitely the clear winner and it looks better.
Even when the SVS chap came over to my house to demo the PB sub he couldn't believe the difference in my room.
The box is much cleaner than the cylinder and that horrid port noise of the cylinder! Yuk! Bad design in my eyes.
The box even at full load doesn't chuff at all.
The main problem I found was moving it around to find the best listening position. Talk about bad back. :doh: