Both Aimpoint & EOTech are good optics. You should try to go shooting with friends who have
both so you can see which one is best for You.
I like the Aimpoint best, but that's just me.
Go to this thread and you will see lots of setups of Aimpoints/EOTechs.
[url]http://ar15.com/forums/topic.html?b=3&f=118&t=168415&w=myTopicPop[/url]
With your A1 carry handle, you will be kind of limited on mounting options, but it's best to
mount your optics forward and not on top of the carry handle.
The Aimpoint has it's own forward mount or you can use an ARMS #39.
It will co-witness the Aimpoint but not the EOTech. For the EOTech use their brand forward
mount or try the Bennie Cooley Co-Witnessing Adjustable Mount.
There are more expensive alternatives as well, but those are your best bets IMO.
~ s0ulzer0