Help me choose lightwieght hunting rifle.

Hello was looking for a sub 6lb truck gun that can come with me on long hikes. I think i want a Benjamin and was wondering is the discovery different from the maximus in any other way than slightly longer barrel and synthetic stock? Also is the fortitude just as accurate as the disco and maximus? Could I take out the reg and put in disco spring and run it on 2000 psi? I like the 2000psi fill option because I run a hand pump in the back of my car. Thanks guys. 
 
Hatsan flash looks retarded but everyone tells me they are accurate. I think flashpup might be the way to go. Looks a little better. I heard that the extreem spread on the .25 is a little harsh. The small airtank made me question its shot yo shot consistency. I have never shot one could any of you tell me if the point of impact changes very much from shot to shot on 25 and what kind of strings you guys get even if its 22 or 177 id be interested. 
 
I agree it had one of the worst strings i ever saw too. That didn't stop steve from putting 5 through the same hole at 50 yards. Honestly I dont need too many shots the way i hunt now. Unless I find a place that has a ton of jackrabbit i dont see that changing. I wish I had a dairy farm near me that i could be able to help them out and test my airguns on pidgin scum. If I did I would be more worried about a good shot string