Shoul I consider a power conditioner?

I have just cobbled together an interesting system, and am thoroughly enjoying the process. I am, however, a bit unsure how to proceed with respect to power conditioners. I have never previously owned one, though I have had a couple of nice systems. Having researched a bit, I am inclined to consider either a PS Audio or Blue Circle unit.

I'm interested both in general comments about the need for such expensive devices, and any specific thoughts relating to the above-mentioned brands (or others).

Here's my system (thus far):

Bryston b60 integrated amp (owned a Bryston amp 25 years ago!)

Green Mountain Audio Europa Max speakers (the only new component)

Rega Planet 2000 CD player (really liked the original Planet)

Accuphase T-100 tuner (my first foray into the world of vintage tuners)

Audio Magic Sorcerer speaker cables

Osiris speaker stands (discontinued; luckily found a used pair)

Thanks in advance!

Tony