16-80CZ vs 24-70CZ vs 16-50 on A77

Great comments!  Thanks!  Very Helpful.

I'm leaning between the 16-50 or the 16-80.

Now when factoring the prices...

I can get a used 16-80 for $475 (used, original owner) a little nervous given the low price, need to check it out.

Or

a 16-50 for $650-$695 used from various locations.

What would you do?

--
Ernest
a77/a300/Tamron 10-24mm/Tamron 17-50 f2.8/Tamron 70-200 f2.8
/Minolta 24-105/Minolta 100-200/Minolta 50 f1.7/Tamron 90 SP Macro
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