I have an A2; it's a good light. It won't knock your socks off initially, but with more usage you realize what a good design it is.
The broad, wide LED beam is good for walking, and run time on LED mode is 15+ hrs. The incandescent beam facilitates target recognition amidst foliage.
That said, I usually don't use my A2 for night walks, simply because it's not rechargeable. Rather I usually use my HDS U60 (modified by Milkyspit with an SSC P4 emitter). It has multiple brightness levels and is easily rechargeable.
The A2 is a very good light, but if I had the choice of a single light in that price range, I'd probably pick a Novatac 120P:
http://www.novatac.com/