An Aimpoint or EO tech type sight would be faster to get on target especially when the targets are in a CQB type scenerio.
Aimpoints batteries will last 5-10 years depending on the battery and who you believe so that may be something to consider if you plan to store it somewhere. They are also said to be tougher by many who train a lot or shoot the carbine courses. I would get a 2 minute dot instead of the 4 minute dot and a NV compatable model just in case you add to the sight system later.
The EO tech has a larger field of view and IMO is faster to aquire a target because of it, The 1 MOA dot and 65min circle makes it easy to connect on 8" diameter steels out to 300yds.
I have 2 Aimpoints that went to the Gulf and back and are still running on the original batteries, I also have 2 EO's that I have never had an issue with.