[mvbluefish]

I have no affiliation with any marine product or any agenda to have anyone swayed to buying any particular product. I own a Logic 17CC W/ a Honda 50hp that has the Bob's Machine shop metal hydrofoil installed. My opinion can only apply to these products as this is the only boat I have ever owned. I could list the the downsides and upsides to all these brands as they all have both. As a boater of course I have no data to back up any claims as salesman use data, and boaters in chat rooms give opinions. Keep in mind I have not used any other foil so any opinion I have of other foils is based mostly on impressions formed from advice from others. Having said all that, the following is more opinion and conjecture I believe backed up with NO data.
The Bob's Machine Shop Plate or "true tracker" as it is apparently called is of a fairly thick metal construction. The metal has grooves in it which adds a rudder effect to the steering. I guess thats why its called the true tracker. The upside as previously stated is solid construction with zero flex and enhanced slow speed tracking.
The downside is the not so hydrodynamic profile causes loss of top end speed.
Plastic foils are much more thin and hydrodynamic and may be better for top speed performance although the thinner plastic may flex and allow for a more uncomfortable ride. Always in boating there are trade offs and whats right for me is not right for someone else. If top speed is a high priority than the true tracker plate may not be for you, if improved comfort and slower planing speeds are a high priority than maybe it is the plate for you. All of these are impressions I've gotten from my experiences only and may be off base as everyones feel is subjective. My advice; gather many opinions and make an informed decision based on research and your own feelings.