I'm currently at a dilemna with my gear. I'm selling my 28-135, because it doesn't get any use and I have no space in my bag for it. I would like to have that reach, but I don't particularly want the 70-200L at this point and time. I have one prime lens which is the nifty. I do find my self shooting at that focal point a decent amount on my 24-70L. I'm looking to sell the brick and purchase the 24-105L, or trade for it with some cash from a buyer on this forum. I'll lose a stop going from f/2.8 to f4, but I do have an external flash and a fast prime. I'm thinking the 24-105 would really suit my needs, but I'm unsure how much that extra stop would impact my photography. Any ideas; I would greatly appreciate. Sorry the sentences aren't super clear, but I was in a hurry typing it.