fz, I agree with you on NXG, it looks to be in good technical shape to me, I just hate gaps like that, looks to be a solid bear trap to me though given the volume on the day after the gap. I think when in doubt... look at the moving averages (and fundamentals, which of course are excellent in this situation). If the 25 can cross the 50 day SMA soon, it'll be big news, there's a 6-month chart below and below that a 4-year chart so you can see the type of significant ramps that have happened upon this cross-over...
I'm speculating that the next cross-over of this nature confirms NXG into the big leg 3 up of this longer-term wave 1 trend... i.e. the climax wave 5 (with its peers?)... and it could be truly explosive!...