I use the Carvin AC120S Power Conditioner/Sequencer.
http://www.carvinguitars.com/products/single.php?product=AC120S&cid=61
It just happens to be on sale right now. Best I've ever used. Great build quality. Voltmeter, LED lamps, 20A per plug, microprocessed 35A relays, Big, fat 12ga power cable. 10 stage programmable sequential power up. and best of all..It's made in the U.S.A.
Comparable Products
- Furman's PS-PRO II (list $489 street $429) 4 stage/8 outlets
- ETA PD11SS (list $429, street $289) 4 stage/11 outlets
Most power conditioners do a pretty good job. It really depends on the feature set you are looking for and the application. Most of the time, you get what you pay for.