I am not familiar. As i have told you in the past, i would have echoed your opinion until i started sorting the lighter guns by review and stats for my grandson to use. Factoring price, reviews, features, and then placing that over the critical weight factor, I bought a Gamo Swarm Maxxim.
It will do half inch groups with several pellets, if you do your part. It doesn't make much more fuss than the old HW55 did doing it. It is easier to cock than any spring rifle of this power level I have ever shot. The power is just what i was looking for. The CAT trigger is usable without upgrade. The feed system is batting 100 percent a few thousand rounds in, except for the attempt with the Redfires that don't fit.
There is nothing amazing about it. The reviews describe the rifle pretty well. It will do exactly what they said it will, and after cocking the 95 all day yesterday, the Maxxim almost cocks itself, at the same power level.
The rifle is sensitive to sideways pressure on the trigger. If you rest it on the wool mat, it will shoot high. You grab it, and it will shoot low. You place it in your hand, hold it loosely, thumb center of barrel, not wrapped around, then squeeze straight back towards your thumb with the trigger finger, and it will shoot the same place time after time. That is off a three foot thick stump with an old wool blanket on top and a milk crate to sit on, holding the rifle. Not off a bench with a bunny bag.
I am sorry you have a gun you have a problem with, but indicting all forms of Gamo over it does you a disservice. Even my BSA Techstar is a Gamo product, and at twenty yards, it would literally stack pellets in the same hole.