Hey there,
I would definitely recommend either the 55-250 or the 70-300 IS USM from Canon... The Image Stabilizer at this focal length alone is worth the slightly extra cost, as starting at anything above 200mm camera shake becomes a larger and larger issue.
If cost is a huge issue, check out Adorama's refurb section:
55-250 ($200)
http://www.adorama.com …%20Refurbished&item_no=21![]()
70-300 ($400)
http://www.adorama.com …%20Refurbished&item_no=47![]()
I would definitely check out The Digital Picture for a good review/comparison of these slower telephoto zooms...
http://www.the-digital-picture.com …6-IS-USM-Lens-Review.aspx![]()


