Re: A2...or A1?
Go for the A2. I had an A1 and loved it, but the EVF, faster focus, higher resolution, and DOF preview will really help you in all your shooting situations. It really comes down to bucks. The price delta is about $300, and maybe you would prefer to buy some accessories with that money versus the A2...
You cannot go wrong with the A1, and if you have the money you will really love the A2. If you take lots of macros or manual focus shots you will benefit greatly from the A2s 1mp EVF.