I recently got a Lacrosse Technologies BC-700. It's the little brother to their BC-900, the only difference between then I can see is that the 900 can charge at a higher amp rate. Since I only slow charge anyway, it wasn't worth the extra $30. I got the BC-700 for $32.00 at Amazon. Of course, as soon as I get that the BC-900 cuts its price, so you can now get it for $39 there.
I don't any "professional" chargers to compare it to, but it does great for me. It can charge up to 4 AA or AAA batteries simultaneously, and each battery can be charged independently in several different modes (charge, "refresh," and test) and at several different charge rates, from 200 to (I believe) 700 amp. It has an individual display for each battery that can tell the either current charge or the current charge rate.
I'm quite happy with mine.
Suzie