Tripplite is decent for this kind of thing, cheap & effective
Power protection is critical for any sensitive computerized devices. A bit is determined by a 1 or a 0 (binary code), processors use voltage changes to determine if its a 1 or a 0. If your power is wonky, the voltage will fluctuate & not be accurate causing all kinds of problems for HDDs, OS, Networks & software applications.
As far as clubs go, that will vary greatly. Some booths will have dedicated circuitry that is protected, others will just have you set up in the corner & plug into any available outlet. But even if they do have some protection, if the club is in a part of town where the grid itself sucks, power issues can still be prevalent.
Actually this one seems to be even better, it’s smaller and the outlets are turned upside down, so my A10 and my Macbook can be easily conected: http://www.snapav.com/p-1116-wb-200-2.aspx