I have tyr burner. Most comfortable. Good power. Also own finnis zoomer fit. good fit. Very light, more power than burner''s. Recently purchased positive drive fins. To try something different. PDF have least power. Which I like. Not on lazy day, workout becomes less fun and more work. Excellent for body rotation. You can experience the body rotation. So
High motivation day = finnis PDF
Medium Motivation day = tyr burner
low motivation day = Zoomer fit. (Will get you thru the workout)

These fins make me feel like I am slicing right through the water! I haven''t had much luck using them for breaststroke but I''m not great at that stroke anyway so that could just be user error. They are fabulous for all of the other strokes though!! A little kick goes a long way!!

My daughter and I lap swim every day in three styles(breast, free and backstroke) and with our new fins, we are working muscles that did not work before and doing a better workout of the ones we did. My shoulders do not hurt anymore as before so it really helped me!
What surprised me was that many people in the swim department had never seen them before, I had introduced the fins to them now!
Love them!

Very useful for training.

Have had regular fins for five years, using them in my Endless Pool. Switched to new powerdrive fins and used them for my full 50 minute workout the first day. These fins are excellent and so much nicer to use then regular ones.

I always had a "clunk-clunk" two or 3 beat freestyle kick.  Turns out my feet were canted outwards, but these fins made my toes turn inwards.  Amazing.  I can now do a 6-beat kick!