I have a shocker NXT and a mini.
Personally i hate my Shocker NXT (up for grabs if you want to buy it second hand off me
)
Buying a shocker brand new, and then upgrading the feedneck and board is already £100 out the window, I also don't like the position of the trigger... don't get me wrong its a good trigger, but the grip frame and fore part of it before the trigger starts is too big, I'v had problems playing with this in semi, I have to claw at the trigger (with my nail ends)rather then use the inside of my fingers to shoot. Barrel is good, shoots good, not as efficent on air i don't believe, but with fill stations always at hand i never have too much of a problem with effeciency.
Overall, you have to spend alot of money on one of these to get them to shoot to what you would feel comfortable with. also weighty, if you'v got weedy arms like me, holding this for an entire day takes it toll
(very weedy)
Mini - Lovly gun, you'll have to get used to shooting with the front grip frame as its not your usual shape. Everythings nice and tight, and no macroline to get in the way!
Love my mini before i screwed it up, trigger with repelling magnets is great, board is easier to set then the stock shocker imo, good standard locking feedneck. And as for the barrel, I'v never had a problem with it, shoots damm straight imo, may want to overbore it with a unitec if you really want to upgrade it. Best of all its Cheap!
Bad side... eyes are difficult to get to, you have to take everything apart to get to them to clean them properly.
I'd get a Shocker second hand off here imo theres some really good deals on shockers around.
If I were to go for the mini, I'd get it brand new, will cost around £205 with warrenty which i think is fantastic!
Hope this helps, best of luck with whatever you get dude!