All of the strobe control sets are not really that reliable(for small strobes, for larger studio lights they work amazingly).
The Pocket Wizard system with the AC3 zone controller is exactly what you want. But out of the 10 people that I know that own them, none of them use them for lack of reliability. They work amazing when you are trying to play around but the second you need them to work for real, they dont and are all kinds of messed up.
You can use canon's IR wireless to get the same control with the lack of reliability outside and it is line of sight.
To be honest Canon's 600EX RT is what you want in the end, it is all the advantages of the canon wireless(control of all aspects of the flash such as power, exposure compensation, zoom setting, high speed sync) with the reliaiblty.
Though you have to replace your entire set up for that and if you are doing a 3 flash setup it will be almost $1800 for the flashes and trigger.
At that point you might as well get a few AB400 flashes and vagabond minis with a cyber commander, which funny enough will give you an 2 stop of power and cost about $500 less for the same three light setup.
Nick