Are you buying the 20D 2nd hand ? The new 3OD may be around the same price.. Can you give an idea of the budget? For Landscapes and if you want to move it a bit closer the 17-40mm L is a cracker  Yes fairly usual and worth saving for the best you can buy saves a lot in the long run if you then have to upgrade later..

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt