Keep the Ego
They are nice but you would need to get a Eblade/Worrblade as the Selectfire frame they come with are c**p.
You can't change the settings so they are stuck on 15bps (unless reflashed), the trigger has to be set a certain way or it will bounce like crazy (no debounce settings). Plus the LED push button will die at some point
I had a selectfire on my old Superstock, I ended up getting a T-board and drilling the back for the buttons. Gun was great, frame terrible
Hope this helps
DP