Craig
If you primarily Frog Kick - Original Force Fins or Pros are not the best fins - in fact, I would never recommend them for that type of diving. What people have to realize is there are several models of fins that are made by Force Fin and if you choose the right model - they outperform other fins. It takes gaining some knowledge to determine the proper style and material for the type of diving you do. Nothing "religious" about it - just when you get educated, you hate to hear people make false/misleading comments.
If you look at my picture - I still dive a 1959 Double Hose US Divers Mistral that I used when I got certified. I own 3 vintage double hose regs, a ScubaPro Mk5/109 and a bunch of Mares Regs (from Abyss Titanium to Carbon 42) that range from 20 years old 4 years old. I own 2 Oxycheq wings - a 30# extreme (8 years old) and a 18# travel wing (5 years old). I am not one to change gear frequently or recommend it.
As far as Force Fins - I own a variety, each for a specific purpose. I could spend a lot of time explaining each of my choices and their uses but suffice it to say, I like having the proper tool for the job at hand (and to be honest, the only time I dive my Pros or Foils is when I am having knee/hip problems and can't frog kick).
All I ever try to do is educate - as a scientist/engineer, I have a great problem with people making false statements. If you state that Force Fin Pros don't work for me because I like to Frog Kick - I can totally agree; but if you say in general the Force Fins can't be used for Frog Kicks or other alternate kicks (and have never tried them), then I will argue that statement because there are Force Fin models that WILL do those kicks extremely well.
As far as price, each individual has to determine the value of a fin; but those that rip Force Fins on price without trying them, are basically showing their ignorance (not that you did that). If you give them a fair chance and find they do not provide you with sufficient value, I have no problem with that.