Thanks to Edge Orchestra and Redrocks for the nice comments about me and my band. You are both very kind.
If we doing anything right, I think it starts from the fact that we are, especially Jason and I, huge U2 fans going back to high school in the late 1980's. We started doing this because we loved U2's music and thought it would be fun. There are some tribute bands, not just U2 tributes, that are only doing it for the money and have said as much. They are not really fans of the band and I think it shows. Just have an open mind going in to it, see the band play and develop your own opinion.
Personally, I have always respected the talent and people in Elevation Canada and UF. They are both great bands, nice guys and have no misconceptions that they are really U2. Some bands seem to forget that. You will not meet two nicer guys than Brady (E Canada's Bono) and Mick, (UF's Edge).
As for the original question, you will find good and bad tribute bands, just as you would with any other kind of band you could go see play a club on a Friday night. Just have an open mind and go see what you think. You'll never know unless you try.
good luck