[Hectic]

in my use i have found the flat hop and the promy bridge to be prety close (the promy just a touch better in the same gun i assume due to the notch keepin the bb more centred in the barrel then the slight concave of the modify) and really not any beter then the rhop (irhop i think, cant recall) all in a 400fps m4 type gun with a madbull 6.03 barrel. I would say tho that it may he possible to get better results with alot of tinkering on an rhop, but for the ease of simple drop in install i vote promy smooth rubber and bridge tensioner all day long, under 370fps running .28 or lighter use the soft bridge and the hard one for heavier rounds/higher fps setups. Again just my opinion from my testing of the three, your ability to spronkle fairy dust on rhop installs may yield better results then mine tho i doubt it would be a huge improvent for the work involved (tho i guess the install tool maybmake it easier to see optimal results with the rhop)