have a sub question

I can't speak directly to your question, but sealed boxes are generally (tho I can't say "always") tighter (as in more highly damped) than ported boxes. On that basis, you might want to substitute the SB series - rather than the PB - from SVS for your comparison.

Using a Dspeaker 8033C on my SVS 2039pc+ and the bass sounds great. Not bloated and no suck outs. I would think you would be very happy with a PB 1000/8033c combo.

Just my 2c

I would definitely say the svs, after reading all the hype about hsu on another sight, I ordered 1, lets just say that the hsu was not as advertised, I lost $69 dollars on shipping and then another $89 sending it back, I would sugest the svs as they cover shipping both ways. good luck