I'm currently using this [amazon.com]
Canon 18-200mm lens.
I rarely use the 105-200 range though. If I were to pick up this lens what would I be gaining for my investment? I'm not a professional. I typically take photos (mostly landscape type stuff) on vacations and have them wrapped to hang on the walls of our home. Would this be worth the upgrade?
this lens is weather sealed, so would match with a 7D, 60D, 50D (weather sealed bodies). it would be sharper, and better colors. but that really only matters if you're doing big prints with good inks or you crop a lot.
I'm guessing you are just using canvas prints for those wall hangings?