I've heard nothing but good things about these, but one thing that I don't understand is they appear for all intense and purposes to be the same as the old hook stile rotten bottom with a bait clip added, and the old style ring with hook I always found rubbish often I'd reel in to find my weigh still held by the hook as it hadn't released.
Primo, you've used these are they really massively different in terms of how they operate and release rates? I switched to Gemini rotten bottoms because I got fedup of the basic ring/hook ones not releasing is all.