Well, I can't have every lens out there, and it appears that of the lenses that I'm looking at in my price range THEY all seem to get pretty good reviews here and elsewhere. I'm picking the Sigma 170-500 because I'll get the extra reach, and it is a bit cheaper than the Tamron 200-500.

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA%3AIT&rd=1

So, unless I hear otherwise, I'll be putting a fast shipment request in tomorrow!

Thanks, Kevin