I had not heard of the Franklin BFS, so thanks for making me aware of that!
The price is a bit steep, and even worse for a HK trigger setup. Not sure if it is a product I would use, but it is always good to see innovative products being marketed!
I have a couple of Elftmann single stage drop in triggers, a couple Geissele 2-stage triggers, and a few LaRue MBT's. All of them are very nice triggers. However, its hard to beat the occasional $99 sale on the MBT.