I agree with gswitter, the RA is very versatile and every bit as tough as a Surefire.Set the Clicky's primary level to the level you use most. Click it on, click it off. It always comes on at the same level. All the other features are only there if you want/need them.
This is really a case where you should buy both... the optic in the E1B and the high output is a perfect pairing with the Ra's wonderful general purpose beam.