Last year I purchased a Canon EF 70-300mm f/4-5.6 IS lens, while I am not totally disappointed with this lens; I wished I had done more research prior to buying it.
I am now looking at buying the 28-200mm and would like to hear from those of you that have used this lens. I mainly shoot wildlife, flowers, and some portraiture. I am looking for a versatile lens that will allow me to shoot a variety of subjects without having to change lenses all the time. In addition to the 70-300mm, I also own the 18-55mm that came with my digital rebel.
Thanks for any and all advice 


