Jpomerantz is right; it depends on weather you plan to do any enlarging/cropping/editing or not.
From a printing standpoint, if you do not plan to print anything larger than a 5X7 the extra 2.1 mp will not make any difference at all [You will start to see a loss of quality in an 8X10 +]
With the 2.1 mp difference aside, there are a few other [very minor] differences.
The 620 has a slightly higher MaxRes [2592x1944(610) vs 3072x2304(620?] I think!
Hmm, only other difference I can think of at the moment is the fps on continuous. Continuous drive on the 610 is 2.4 fps I believe, while the 620 is 1.9.
Last differece is with included memory, 16mb(610)vs 32mb(620) Hooooweevver you’ll need far, far more in terms of memory anyhow so it really shouldn’t influence the decision.
If you think you'll be doing any significant amount editing, enlarging or printing, you might find the 620 worth your while! btw, great camera
