I'm currently in the market for a cheap, but not crappy lens for my Olympus E-400. After some searching on the great interweb, I came across the sigma 18-50, and it looks pretty good. Also, another lens that i'm thinking of buying are the sigma 55/200 f/4.0-5,6
Links on amazon:
The 18-50 mm
http://www.amazon.com/Sigma-18-50mm-3-5 ... 748&sr=1-1
The 55-200 mm
http://www.amazon.com/55-200mm-4-0-5-6- ... 748&sr=1-9
Olympus E-400 14-42 mm 40-150 mm.