I used to carry the Sig Romeo Zero Elite, it had very good sight picture however I swapped it for a [[Holosun EPC Carry]] for three reasons: - The Romeo Zero Elite has a chemical shield however it didn't work well. I got to the point where the battery would last for a week maximum and... - To change the battery you had to take the optic all the way off the slide. Fortunately it seemed to come back into zero just fine but it was still a pain - I also wanted to switch to a fully enclosed red dot because it was a pain to clean the lint out