Absolutely go for the PB2000 if you can accommodate the size. It plays as cleanly as the SB2000 despite being ported (lol the myth of ported subs sounding 'sloppy' need to stop), except at much higher output across the entire frequency range (even in the mid-bass area).

Protip; It takes 4 SB2000 to equal 1 PB2000 in output.