Re Paradigm. I saw it at the Shooting Show when the show was at Newark. I spent a reasonable time with the inventor and had several goes with the rifle. To begin with it was very awkward to operate but then suddenly I 'got the knack' and it was really quite easy. Had it gone into production I would have bought one.
The Dragon is a nice rifle but a bit quirky and I never really understood the principle behind how the power was adjusted apart from the fact that a grub screw was twiddled (Mods: I am not looking for information here!). They are also not too difficult to reseal but clearly need to be used to maintain the seals.
The Daystate Sportsman is easy to work on but two pumps for full power is a bind, and very tiring after a while.
So ... a nice easy single stroke pneumatic that was reliable and easy to work on would, I believe, be a success.
Cheers, Phil