Both are great but the magnifier has 2.5 inch eye relief - EOTech HHS-VI Complete System Red Dot Sight w/EXPS3-2 HWS and G43.STS

The exps3-2 is a great optic simple to use glass is clear with good view with bothe eyes open. The g43 magnifier is nice also clear glass high quality but the eye relief sucks at around 2.5 inches i had to remove the rear iron sights to get the magnifier close enough to my eye to make it work some what but couldn't get any closer due to the quick detach lever coming in contact with the charging handle. I haven't figured out a solution yet for rear iron sight due to no rail space behind the magnifier. I might get offset between the optic and magnifier if possible it might push the optic to far forward off the upper receiver. As of now the iron sight is in front of the optic on the front hand almost on the upper receiver the way im seeing it the iron sights will only be used for practice and if the optic fails.