One year it's the Turbo's, the next it's the year of the Supercharger.
ProCharger has recently developed a new huge blower - the D-3X or something like that. It is supposed to produce ungodly amounts of power.
If you look at what the Pro 5.0 racers have done each year it's really simple - they switch to whatever is the faster of the two. Last year everyone and their brother were running the ProCharger's and this year it was the Big Thumper Turbo.
Get what you like based on the facts above. For me, hands down, it's gotta be an ATI ProCharger!
Take it easy,
E