As a dealer for half the brands mentioned, I'll chime in. If you want max lumens on AA batteries, there are two 700 lumen lights that use the CREE MC-E LED:
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Fenix TK40 - Uses 8 AA batteries, 4 brightnesses, 4 flashing modes, rear switch
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iTP A6 Polestar - Uses 6 AA batteries, 3 brightnesses, strobe, side switch
If you want something that is in a bit more of a pocketable size, I would recommend one of the models that uses 2 AA batteries. The single AA lights using alkaline or NiMh batteries cannot compare to the lithium lights, but the 2 AA lights come close. If you want 2 AA, there are a ton of options from me alone, and I don't even have all of the ones on the market (give me a couple of weeks

):
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Fenix LD20 - By far the best selling 2 AA light for me, 4 brightnesses, strobe, SOS, good interface
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Fenix TK20 - Two brightnesses, warm white LED (good for color reproduction in the woods), nice rubber grip
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4Sevens AA2 - Basically an LD20 with lots of knurling and a really low low, 5 brightnesses, 3 flashing modes, comes with a pretty cool hand grip thing
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4 Sevens AA2 Tactical - Same as above, but with a forward (momentary) switch and you can program head loosened and head tightened to whatever you want instead of cycling through different modes. Also available in
warm white.
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Jetbeam Jet I Pro EX 3.0 - This one is really neat. You have three modes that you cycle through, but you can program all three modes to whatever you want. You are not limited to certain preset modes like the Quark Tactical, so you can set different brightnesses, strobe from 1 - 20 Hz, different flashlight rhythms, and all kinds of other stuff. Sounds complicated but it's really not bad to set up. Probably the brightest out of those listed.
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NiteCore D20 - Uses a piston sleeve instead of a traditional switch, good interface, adjustable brightness
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iTP C8R - Adjustable brightness by turning the head, really good ergonomics, strobe, SOS, lowest priced
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iTP C8T - Same as above but without strobe and SOS and with a forward (momentary) switch