I owned an EO Tech as my first AR optic, mainly because I got an employee discount at the time. I pulled the EO Tech off one day to try a different optic, then remounted the EO Tech when I was done. In the process of reinstalling it, the cross-bolt of the integrated mount sheared through, rendering the sight useless. I found someone that wanted the broke EO Tech (they exchanged it under warranty or something), and happily switched to an Aimpoint M2, and have not looked back. Mine lives in a LaRue LT-129 cantilever mount. Battery life on the Aimpoint smokes the EO Tech, and it's MUCH more durable.
Do you already have a rail system installed, or would you have to add that, as well? Assuming you already have a rail system, look at the VTAC L4 combo
. $195 including a VTAC mount gets you the same brightness of a Surefire 600 Scout light at half the price, just lacking pressure pad and a different mounting method. The body of the light should be just long enough to reach from a railed handguard and put the lens of the light in front of an A-frame.
If you don't have a rail system, IWC offers some mounting solutions that can help push your light in front of the A-frame, without mounting to the gas block.