I have been looking at that Vortex scope as well. The pluses for me are the size, weight, true 1x, warranty, and reticle. The minuses are that it's a Vortex (never heard of them before) and it's not available until May, so I can't review in the store and doubt anyone locally will carry this line anyway. I also heard that the entire first run is sold-out to back orders, so you may not see it until mid-summer.
I looked at the Millett and have some issues with that scope. It's big, heavy, so-so clarity and has an odd fish eye problem at 1x. The pluses are the reticle and the price. Also, if you don't care about size, weight and money, look at the Meopta 1-4x K-dot. It's extremely tough, bright and clear, with a great reticle, but weighs a ton.
I reviewed the Leupold VX-3 that Ullie mentions. Sweet scope! But again, good and bad. The good is the clarity, field-grade construction, reticles, warranty (can't beat Leupold), size and weight. The bad is the 1.5x (not true 1x) and it's not at all tactical looking. I can't find the more tactical Mark 4 version anywhere to review. I also read a post from a soldier in Iraq that said everyone there uses the VX-3 because the target knobs on the Mark 4 sick out too much to bang around. I wouldn't have that issue, but interesting.
At this point, my money is going to a Trijicon TR243 or TR243G. This scope is tough, small, light, true 1x, clear, bright and fast. The German reticle also seems best (over the chevron) for distance shooting. I looked at both and the chevron was odd to me, but should be faster than the German. My only concern is the tritium/fiber system in very low light. I tested by moving my hand over the fiber optic window in the store and it seemed that you had to completely cover to lose the dot, but that's hardly scientific.
Best,
=Mark=