Trijicon TR21 Accupoint might just fit the ticket. 1.25 to 4 power variable. At 1.25, it is very close to a red-dot and has some modest light gathering power for twilight. Long eye relief too, somewhere around 4 inches. Tritium and fiber optic lit. No batteries needed. Scope is fairly compact and lightweight 11 ounces. I paid about $400, IIRC. That was a couple years back
Here's an example at $573.75 That's not a horrible price, but you may do better
http://www.opticsplanet.com/product-catalog/products/trijicon-accupoint-125-4x24-riflescope-tr21.html
Lots more money, I am really happy with an IOR Valdada 2 to 12 power. This would be more of a mid range to long range scope. Although at 2 power, it is very quick to acquire a target. It's a 35mm tube, illuminated mil-dot reticle. Extremely clear glass. But it's over a thousand dollars and rather dense package at around 19 ounces..but built like the proverbial tank.
And I've got a Nightforce NXS 2.5-10 by 24mm. with the NPR2 reticle. It is very similar to the IOR, a 30mmtube, same bright glass beefy construction. That particular reticle has very fine lines that can be a little difficult to see under just the right combination of glare and shadow. But Wow! Prices have sure gone up on this one.....Ahhhh, now I see what's going on..I'm looking at a New Zealand pricing
Another but I have no experience is the 1-4 Nightforce. It's a true 1x.
Bushnell makes a Elite 4200 1.5-6X 36mm Matte -- no experience
Leopold makes a similar one
Here's a page with a lot of choices http://www.bearbasin.com/catalog.htm#nightforce_scopes
There's quite a few 1.x - 4. IOR even makes a couple as well
I think what you want for price and capability likely the TR21. Been very happy with, It's my girlfriend's deer hunting setup on a .243 upper.
But the 2-12 IOR, 2.5-10 NXS and 1.25-4 TR21 I mentioned are the only ones I personally own.
ETA:
Disclaimer These are Not my pictures, I still haven't bought a digital camera. This is from a couple of different threads of AR optics and it'll give a bit better idea of what these look like...
IOR 2-12 32mm optic in a 35mm tube
and a NXS 2.5-10 24mm optic in a 30mm tube on a LaRue base
and the TR21 in a LaRue mount. (I happen to have mine in a one piece Armalite base) I think for the typical nose-to-the-charging handle stance, the cantilever is a better choice as the TR21 has long eye relief and a standard mount would have it too close for most folks.
The only minor downside of the IOR is a limited choice of mount options. (I had heard rumors LaRue was going to make a 35mm cantilever mount...but I don't know if that's a fact. Anybody know?) On the other hand, the rings with a quick disconnect are part of the IOR package. so no added expense there. They come in high, medium and low height. I know that's not real useful without dimensions....maybe somebody has actual numbers.
Both have got lots of options for reticle choices.
www.ar15.com/forums/topic.html?b=2&f=165&t=145406The IOR reticle is using mils and the NXS NPR2 is using MOA tick marks for ranging. Both are calibrated for use at 10 power for ranging. However both have turrets graduated in 1/4 MOA, so zeroing is the same. Holdovers would be different, but you'd ge used to it. The IOR reticle I've got is a newer version of their MP8 with cross hairs that meet with a tiny dot in the center. I like it. some folks object that the dot obscures really small targets.
www.impactguns.com/store/media/ior_reticle.gifWhich scope I like better? Honestly, the NXS and IOR are so close I flipflop back and forth. The IOR has a slightly wider range of 2-12 vs 2.5-10 for the NXS. This is really subjective at this point -- I like the side focus on the IOR and I like the IOR reticle just a little better. The tiny dot in the cross hairs seems to draw my eye to the center a little quicker. But I also really like the Trijicon for the half pound less in weight to lug around. The Trijicon aiming point is extremely fast...just put the target on the tip of the triangle. But it is also very precise, unlike a red dot optic that would obscure a circle the size of your hand at 100 yards, the Trijicon allows easy one inch groups at 100 yards. Real soon now...I'll actually get a digital camera and have some real pictures