I'm looking at adding a Pacbrake and was wondering who has the best price?

Daytripper,
Did you notice any difference in performance of the Pacbrake when switching from the turbo mounted to the inline unit? I've heard that the inline is a bit slower to respond since there is a greater amount of volume in the exhaust pipe to pressurize.
Do you have the new PRBX (sp. ) model? If so, how do you like its performance. I've heard that they respond well even at lower rpm's.
Do you guys haul larger trailers? I have a 25' Nash that probably weighs in the 7000/8000 lb. range. I live in the mountainous West & do a fair amount of mountain driving. Honestly, I haven't noticed a huge need for compression braking with the 6-speed trans. (NV-5600). What do you guys think?
I'm not sure that I want to go through life 'without' an exhaust brake. For me, I think it's more of a 'want' than a 'need'.
Thanks.
Joe F. (Buffalo)
Does the Pacbrake have a tapped hole for an EGT probe like the Jacobs?