Suggestions for a conditioner/surge protector?

If you can't do dedicated lines, then get a power regenerator (not a conditioner/filter -- they ruin sonics and represent "old technology" IMO) Consider an Exactpower EP-15A (my favorite ;--)

If you COULD do dedicated circuits and your power company provided relatively stable power, you wouldn't need a power "conditioner" either -- maybe just an isolation transformer.

Power conditioners IMO are high profit items whose charms have long ago faded, and any "surge" protection they offer is false security. If thunderstorms are iminent, UNPLUG YOUR SYSTEM!!
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I should have stated that my budget is around < $500. The monster power hts 400 would work, but I don't know if it would be good enough.

In response to the power conditioner issue, I built from a kit a unit from Bruce at Transcendent Sound. The unit retails about $400. I have very dirty power and run an entire stereo system throught it without any difficulty. If I could build the kit anyone can however, the completed unit is available. I wholeheartedly second the pulling of the plugs in the event of a thunderstorm warning. Steve Levick

Take a look at the Monster product line

http://www.monstercables.com/power/

and the new H series of AVB power conditioners from APC, the leader in the computer space.

http://www.apc.com/products/family/index.cfm?id=307

Both companies have offerings that properly sized, will absolutely make a very visible difference in your image quality.

Hopefully you will be using two different circuits both on the same phase leg. If you are going to plug both conditioners into one wall outlet - for reasons of budget or logistics - I would just get one bigger unit to plug everything into.

All things being equal, the sub should go with the rest of the audio to minimize the chance of a ground loop problem.