Each company makes different models of their outriggers. The T-Top mounted swivel style outriggers are not cheap, but a lot easier to work while at sea than either gunwale mounted or manual ones you have to lift out by hand.
While the strength of the poles is important for the task required, don't forget to ask about the maintenance requirement for keeping the swivel mounts working properly!
Some are less maintenance intensive than others, and getting them torn down, serviced, and back together after they've frozen up is expensive too!
Rupp and Lee make excellent outrigger systems that have made a name for themselves over the years. Taco's are being used more, but I'm not sure of their long-term viability -- time will tell.