Do you want it to be another AAA light?
How will you carry it (clip, pocket, coin pocket of jeans, ...)?
The Fenix L0D CE, Liteflux LF2, and Jetbeam Jet-u are the current hot AAA lights. All have their advantages and disadvantages. The Jetbeam is closest to the Arc size but sound like it's driver circuitry is not very efficient with standard AAA's (better with 10440). The Fenix was the first Cree AAA available and is pretty vesatile. The Liteflux is user programmable but I think the longest of the 3.
There's also the Draco which is expensive and uses non-standard batteries but very nice by all accounts.
There's also a long waiting list for Millermods Arc conversions (Arc AAAp body with Cree LED installed.)
The reason I mention size is because an Arc AAA will fit all the way down in the coin pocket of my jeans (32 waist Levis). The Jetbeam might do the same but I don't have one. The L0D CE will not fit down in that pocket and has to stand up. The Liteflux might even poke out of that pocket. So if you like the Arc size, be aware that these others may be marginally bigger.
As AAA lights go, I still love the Arc AAA design but the performance of the new AAA Cree lights is pretty remarkable.