i have both the nostromo and the g13 i used the nostromo for over a year but i got a g13 because i had a little more money than i expected left over after finishing my new desktop. i have fallen in love with the g13, it actually has a gw2 applet that shows area completion infromation and your characters stats on the lcd at the top. you cant go wrong with either one there both great pieces of hardware but i would personally reccomend the g13. i believe the g13 is also a tad cheaper on newegg
Yup, got G13 already and I love it!:)
The only thing I am not sure about is if Arena Net/NCSoft let people use advanced keypads for GW2, because of some cheating/macros concerns. I heard some rumours like that about the first GW and I don't want to have my account banned for using a forbidden game interface...