im in the market for a new compressed air tank/n2 and i was wondering what it the big difference of carbon fiber against not getting it in carbon fiber. thanx in advance.

and if i get one that's not carbonfiber wrapped and use tank cover that be okay/better
http://www.actionvillage.com/031-3002
http://www.actionvillage.com/031-187-0003 how much shots ya think?
or
http://www.actionvillage.com/031-3011 non wrapped