Another one to consider is the RWS/Diana 340 N-Tec, it's a gas ram break barrel, smooth cocking.
The warranty is two years, velocities in .177 in the 900 fps range.

I have a 350 N-Tec in .22, great break barrel, great trigger.

Fotis, Let us know what you decide!

"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen