OK, well i've been playin paintball for around 3 years. i've had an icon e, and a TES. im 14,lol

and now i want to upgrade to a more tournament reliable gun.
Im tryin to find a fast gun for the best price. here's my thoughts:
Impulse-well, idk how fast they really shoot...are they faster and better than ions?
Ion-cheaper than impulse, i think little bit slower.
i've also looked through b2k4's, but i don't want one now cuz icd isn't making them anymore, so i don't wanna deal with that.
PLZ help me choose the faster and more reliable one of these two!!
can you give me some more info on each gun??