I've looked at quite a few, but would like to know if anyone has had positive/negative expereience with any in particular. My preference would be for something like the meprolight or trijicon, with self illuminating tritium or some method of low light ability. Another I've considered is burris, like the fastfire. Usage would be a 12 ga. Hunting using doule 00 or rifled slug. I've also thought about setting up the sight to lead birds. It looks like the best one for this may be the burris. Thanks folks, brad.