currently i have the 18-55IS kit lens, 28-135 zoom and just recently bought a 70-200 f/4L lens to go with my XSi. i am trying to decide what lens to save up for and any recomendations are appreciated. the 28-135 is the lens that i keep on my rebel about 80% of the time, its a good walk around lens,but i miss having the wide angle(due to the crop factor). i am split between the efs 10-22 and the 17-40 L. i dont forsee myself stepping up to a full frame camera, so getting an efs lens is not a problem. i have heard and read great things about both lenses, but dont know which one to save up for. i also want to save up for a macro lens later on this year too, or should i just get a 25mm extension tube for my 28-135?? so many decisions and so little money......lol


thanks for ay help


james