I have a couple of Aimpoint T-1 Micros and a Zeiss Z-Point. Both are fantastic sights. I mostly use them on my turkey rigs and I'm sold on red dots for them.
They allow you to sight-in for a given load as opposed to beads. They have unlimited, non-critical eye relief and you can easily use them with both eyes open giving them a big leg-up to scopes. Finally, they are forgiving of shooting form errors due to sudden, awkward shot presentations, which is common in turkey hunting or moving big game.
Their optical clarity lag behind scopes and they dots are too big for much utility beyond 150 yards, at least for me. However, for close-in shots on moving game or quick snap shots while stalking, I don't think there's anything better.
I also started my young son with a T-1 this year on a 22LR and latter a .223 Rem. I found it easy to coach good form and get to success both at the range and in the field with it.
