Tedski,
Those were BAT 30's that you tried, and found too stiff, not 40's. I couldn't see using anything stiffer than a BAT 20 for anything, but there are much bigger people out there who might like them.
I had a pair of the Black Esclapez fins for a while. They were stiffer than the plastic Sporasub blades, but softer than my plastic Picasso Black Team blades. The plasti omer blades seemed to be about the same as my plastic picasso blades- without as much angle to the blade.
Yes, I do have a few pair of C4's, but they were so much cheaper than my last drysuit that I couldn't help myself- and I am sure that they cost me way less than Rig's Wong Collection!
I got the 40's at first because I "thought" that I wanted a stiff fin. I then switched to a pair of 30's and loved them. Towards the end of the season I sold off the last of my scuba gear and splurged on a pair of 80's. Unfortunatly, it was too late in the season to really test them out. I have only been able to take them to 75', since that was the bottom of the lake, but they were the easiest kicking fin I have ever used. Those 75' dives were, by far, the easiest I've ever done. I can hardly wait until next season when I can hit some deeper water with them.
I would really like to try out a pair of 25's, or even 15's, someday. I used to like stiffer fins, but now softer seems better for me. I have only briefly tried out a pair of M-tech's, and they were at least two sizes too small for me. Even so, they felt like a really nice fin to me.
Now, if I could just learn to love my monofins as much as those 80's I'd be ready for some real depth.
Jon (5'10"/170lbs)