Hey all, I was looking for a middle of the road, decent piece of glass as a step up from my kit lens. I found this one on ebay and wondered what you all thought. http://cgi.ebay.com/Sigma-28-70mm-E...ryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem or this from B&H http://www.bhphotovideo.com/bnh/con...755&is=USA&addedTroughType=categoryNavigation I know comparing a 28-70 to a standard 50mm is probably like apples and oranges, but for about the same money, which would you go with? I have been shooting mainly still life stuff, and have dabbled in portraits, which I will continue to work on. I like shooting landscapes as well, but neither of these lenses would really be appropriate for that I don't think.