I'm certainly no pro, but I like quality at a bargain price (who doesn't?). That's what got me into the Sony A mount systems. I started with an a300 with the 18-70 and 75-300 kit lenses. I never added to these lenses. That camera had a bad control wheel and I replaced it with an a55 I got for cheap. Since then, I have finally started to acquire additional lenses. So far, all are Minolta. Here is my current stable of lenses: Sony 18-70 kit Sony 75-300 kit Minolta 50 1.7 Minolta 35-70 old/good one Minolta 28-135 secret handshake Minolta 70-210 beercan I still find myself needing that 18-70 to for its width, otherwise don't care for it. The 75-300 I almost never use, but the extra 100mm came in handy at the zoo vs beercan. The 50 1.7 was a garage sale find in mint condition for $10, and it really has surprised. But 50 isn't all that useful of a focal length, but that 1.7 is great in low light. The 35-70 hardly gets used. It is a nicer lens than I thought it would be. I do appreciate the light weight, but 35 isn't wide enough. The 28-135 is my main lens right now. While I love it, it definitely isn't perfect. It is the lens that has the most resale value among what I have. The 70-210 is nice, but sharpest at f8. I'm wondering why this lens gets so much love while the 100-200 4.5 goes unnoticed. Less than 1/2 stop difference wide open, but is sharp wider than the beercan and not nearly as bulky. It seems to me it would be more useful overall because of that. Am I crazy? Why is it worth less than half of the beercan? I'm not married to any of these lenses. I realize the SH and Beercan are going to bring me the most money if I sell them, but even their prices have dropped quite a bit lately. What's the most cost effective way for me to improve upon what I have? The best way for me to describe the kind of shots I take is to say I shoot memories. Mostly people and places. I'd like to explore macro, but can't see myself doing a lot of it. Sorry about the length of the post. I wanted to give as much insight to my thoughts up front to help with replies.