What did you end up getting? Curiosity killing the cat and all...
So, I ended up going with the TAMA direct drive pedal, unfortunately it didn't make me an ultimate double bass beast immediately but you know, I knew that wouldn't happen (okay, maybe 1% of me was hoping)
It's a very responsive pedal though and if I was a single bass drummer a new pedal probably would have been all I needed, my right foot speeds are very fast now (well, for me at least lol) starting to wonder how I got by so long on my old pedal, it's a hurting unit...
I want to take this new pedal very seriously though, it's probably the most expensive thing I have ever purchased besides a car haha.
I tried a few experiments, closely watched how I play, it was interesting...
*edit - after watching a few videos at work today I don't think what I'm doing is called the swivel technique, I think it is called the "slide" technique so just replace anytime I say "swivel" with "slide" in the following comments
- seems my right leg just naturally does the "swivel" when I do fast doubles/high tempos/etc.. honestly had no idea I was until I watched myself play. I can also kind of naturally shift to more ankle use if I hammer away singles really quick. No idea how, I'm just doing it...it's far from perfect, but I'm "doing something" when I start thinking about it too much while I'm doing it though I kind of lose the mindless connection I have so I'm trying to avoid analyzing it too much at this early phase lol
- My left leg can't do fast doubles very well, honestly it can't even do mid tempo doubles very well...definitely not several in a row, and does not swivel unless I consciously make it and when I do, it's bad and forced. I am not using one bit of ankle ever, it's like a big dead fish tied to my knee. It only has good power/speed (140bpm+) when I slam my foot down where as my right leg can just tap the pedal and get a good solid strike. For some reason though when I do really quick "bursts" of double bass (200bpm+) some kind of akward/ugly swivel happens to my left leg/foot for those few, very quick, short hits but no matter how hard I try I can't replicate it unless I do double bass bursts. Seems I just naturally do "something" for the bursts...can't isolate it though...and not even sure what it is I'm doing haha
Here is the best realistic training program I have shat out for hopefully strengthening my left leg...
1 - play with whatever nonsense is on the radio with only my left foot (warm up)
2 - play with faster thrash metal songs (singles and D-beats) with only my left leg
3 - play Iron maiden songs (you know that same old tempo they always use) doing left leg doubles through the whole song
4 - Play steady/constant singles with left foot through entire faster random songs
5 - While this "left leg" training is happening I will also hit 30 min or so a day of just straight up double bass, doing what I've always done but not so damn hard (with my left foot at least) in the 140+ range (gradually increasing until I hit 180 consistently/etc)
Sorry for the huge response to asking what pedal I bought but your original response and the rest of the members motivational replies have lit a god damn fire in me I can't seem to put out so I'm all in now!!