Well I bought the S5. I was looking for a good bridge camera and the S5 was "IT". I put Kodak out of the race because the digital processor is not as good as Canons. They process light differently. So far I only liked Canon's and Sonny's digital processor. Nikon is also high end.
So Now we come to Canon. S5 IS is beautiful thing but a bit big, not sporty, big carrying case and stuff. But since I already have a small camera tht fits nicely into pockets.. this doesn't bother me, also i was looking for something semi-professional. So in the S series.. S5 is best for the price.
As for the A650 its a bit old. And in the same price range you can get A710 or 720 as well.
Unfortunately I haven't tested it yet. I bought the camera from an online german supplier who was selling it abt 70