Pros and cons of each. I know the EKP-8-02 is hard to find.

EKP-1S-03M pro's
1. uses readily available AA batteries
2. switches in a more protected spot, but still easy to manipulate
3. adjustment knobs have protective covers.
4. has a rubber sun shade attachment.

basicaly the EXP-02 is the same sight with the above improvements, and the 02 model uses a calculator battery instead of the AA's.
the only problen i see with the -03 model is that i saw a post earlier this week where a member was using an -03 in a match, and he had the battery compartment pop off 3 times from the recoil. and one of the protective covers wont stay secure.

here is the post with the kobra problem at the range. www.ar15.com/forums/topic.html?b=4&f=64&t=57226&w=searchPop

Im hoping to be at Ben Avery this weekend, and ill have both models with me if you want to try them out.