Power Conditioners

Before I bought any conditioner I would install a dedicated circuit.
After that if you have power surges or brown outs the next consideration
should be Environmental Potentials EP-2050 system. Cost about $1,000.
After those two moves you should look into power regeneration. Conditioners are the last move.

I had an AudioQuest Niagara 1200 on my system and it didn't do much for my sound.  Moved it to the office system just for the surge protection.  I'm a McIntosh tube guy.  I just last month added a McIntosh MPC1500 Power Controller and it made the most significant improvement I've heard in my system, by leaps and bounds. Of course, it costs as much as your system combined.  But, Holy Smokes, what a magnificent upgrade it was.  Wowza.  I love it.  

The devices linked in the OP are not power conditioners. They are power strips with surge limiting. They will not improve the sound, but they may be helpful at preventing damage from power surges and lightning strikes on the power line.

ecrotty,

Living in Florida with lots of storms, I would be looking for a Series mode (SM) type surge suppressor. The Pangea unit you list is an audiophile power strip and offers NO device protection. The Furman does offer SM protection, but I believe also has MOV devices, which are sacrificial and will fail after one or more events.

Other SM protectors are also offered by Zero Surge and Brickwall. These units offer very good protection and line filtering at a reasonable price. One of these two would be my call.

So basically the best bang for the buck right now is a dedicated line from my panel and a high quality surge protector. Thank you all for the information, it definitely helps weed through all the garbage out there!