I used X1 Biaphase about a week ago and hated it. Played well for first 2 hours. Then the string went dead and had no pop at all. All lacked control too. If NRG2 is at all similar I am not going to bother with it. Those who have tried NRG2 and X1 are they similar. Is NRG2 better? have a set of NRG2 and not sure if i shuld string it. Does NRG2 have good power?