I like the TA31F with a mini red dot on top. Although the TA11F is pretty nice as well. It gives you a wider field of view (FOV) than the compact ACOGs. Since observation is a pretty important role of a magnified optic in Iraq, it can make a difference. In an over watch position, it can really make a big difference. I traded a TA01 for a TA33 compact and the first thing I noticed was the smaller FOV. I didn't care for it and ended up getting a TA31F as a replacement. I think the extra weight & size is worth the wider FOV.
I stuck a JPoint mini red dot on there as a backup/up close sight. I really like it. I am in Chandler, AZ if you want to see it in real life. In fact, I am running down to Casa Grande range tomorrow to sight it in. You are more than welcomed to put some rounds though it if you like. PM me.
Another really good option is a variable powered optic. I really like Trijicon's TR21, although the Meopta K-dot and IOR CRT is really nice as well. I have owned all and really loved them. I only got rid of them in a money raising sell off. The ACOG was the last to remain so I kept it.
Either way, check out the Live.com cashback post on the optics board. You can get 20-30% cash back which means you get $200 back in 60 days after you buy it.