Nor*Tex

Ok, i have changed my prospects from the pilot/gsx to these...
I have talked with an owner of both but i would like some moe opinions on both
What i am mainly concerned about is
-Weight(i like a lite marker)
-Stock Performance(accuracy, bps, air efficecncy(sp?))
-Upgradeability

Price is not a factor here, i have found both of them for 170-180

Thanks guys,

Tippy Ninja