Power protection is a huge concern for all musicians gigging or studio bound.
There are several correct statements in some of the previous posts in that the cheap power "centers" are glorified power strips that are rack mounted. But you get what you pay for. In the Furman line anything in the PL series and up is a very good power protection tool. Juice goose makes good stuff and they also make less good stuff too.
The important thing to look at is what are you protecting from power surges and brownouts? A $300 to 500 dollar bass amp or rack of cheap berhinger/alesis processing? Ok, buy a Furman MX or similarly priced unit, rack mounted or plug strip. But give yourself something, anything between the buildings wall outlet and your hard earned gear. If you have a $500 and up amp, maybe a $500 wireless, a $200 tuner, and maybe a $300 rack mount effect/preamp? Go better! Furman PL is good a starting spot.
You want the best? Buy Surgex. You don't see them in most music stores and that's because they are serious stuff for serious boys. Absolutely the best power protection around. There are other pieces that do provide actual power conditioning and power balancing, but they are much more expensive than most of you guys are ever going to spend, or probably ever should spend.
But power protection is serious stuff and needs to be taken seriously if you want any shot at all of protecting your electronics when the circuit pops or a power transformer in the area blows .....or sends a jolt up river to a building (that's called a surge kiddies) or when the power company gets the juice going again and everything in the building comes on at one time (DOH!) including your rig because you had 3 cocktails too many and forgot to shut it down when the power went down!
Don't be a bonehead, get something....and spend more than $35 for god's sake! Its not about how cheap you can get by with, it's about protecting your investment.