Ok, my understanding is you want a fast moving species like the snap tentacles on D. glanduligera. Not many people have D. glanduligera because it is a short lived annual growing species and most growers don't take the time to constantly feed the plants to keep them alive.
However you could get D. burmannii which have snap tentacles which clock in as second fastest. D. burmannii is very prolific and spreads easily. Mine got overgrown
0o
by another species and I haven't bothered re-establishing a new colony. I'm not sure I want to
. D. burmannii is very common and I'm sure someone can offer you plants. All I have are seed right now.
Most of the South African species will display good movement with the leaves wrapping around large enough prey. South African Drosera like D. capensis, D. aliciae, and D. venusta are quite common. Movement isn't very rapid but if you check every 15-30 minutes you should notice movement. Here's a crummy timelapse (click image to start video):