I'm with Vern. It's hard for any of us to suggest weights to you because what feels "fast" to one person will feel "slow" to another. That's one of the beauties of the Allem Roller Release - to change release speed, the gun owner can do it him/herself by changing the roller size with a screwdriver. There are five available that vary by .010" with the smaller ones yielding a faster release speed.
And here's another possibly very important feature - to go back to good pull trigger(s), all you have to do is remove the roller(s)! I used to shoot a Krieghoff with releases. I gave it to my son and when I removed the release parts for him, the resulting pull triggers almost were not useable because of how the sears had to be modified when they were converted to release.
The Allem Roller Release is also the crispest, all-around best-feeling release trigger I've ever used. But the ability to easily tailor the trigger and convert back to pull is paramount to me.
What about the warranty on my K-80? If I get the roller release does that hurt the warranty in any way? I know Krieghoff specifically states on their website that no one should install the release trigger but Krieghoff.
Ditto what Vern and Ed commentated on about the Allem Release. I had Allem's Roller Release put in my Beretta 682 sever years ago. It is VERY QUICK! How quick? Can not relate to actual speed. However, when I relax my finger just a LITTLE bit the gun fires. Some times when I swing on a left angle, I come off of the trigger, "lost".
I only have the one roller that was installed during the conversion. I couldn't want a faster roller, it works great.