suggestions on upgrading my system

Update

After a lot of researh and discussion I went with a Herron VPTH-1mm. Not easy to find… but through perseverance I got lucky and purchased a newly built one at a great price. 

I’ve had the Herron VTPH-1mm in my system for about a month and a half. The improvement of the overall sound over the Harman Kardon on board phono stage was immediate and dramatic. (Not that the HK phono stage was bad.)

I’m very happy with this purchase… the cost to sound improvement value ratio is excellent.

Now onto the next step in my search for music listening nirvana.

The PB NSD hit hard but arent very accurate for music listening, and can get bloaty sounding. 

I was thinking about upgrading to the SVS SB13 Ultra.

The SB13 Ultra is a real good sub. It's competition is the Rythmik F15HP.