My Whisper went from twang and torque to just solid thump after I installed an Air Venturi gas ram. Hold sensativity is less now, and it likes any of the Exact Jumbo pellets from the light Jumbo RS 13.4gr to the Jumbo Heavy at 18.2 gr.
I've read on here that a good tune will also take care of alot of that twang and torque, but you still have to worry about pellet weight and not leaving the spring cocked for long lengths of time. Since I use them for hunting, I didn't want to wonder if leaving the gun cocked for long periods would damage the spring. Or, have to fire it to unload it if the hunting comes up empty. It's not uncommon that I'll leave the gun cocked and loaded for days waiting for a Critter to show up. Hasn't hurt it in the least.
Same for my Trail XL, but with twice the power. It's cocked/loaded for two days now since I had a Starlings shooting session, waiting for the next one to show up, and I don't have to worry if a spring is taking on a shorter set.
One other thing to think about. Since Crosman has invested in so many gas ram models in the past year, I guess they think gas rams are a good idea too.
Paul.