Wow, So many replies. Instead of replying one by one, this is a big reply.
Money isn't an issue per say, I can afford the 24-105L, it will just take me a little while to recollect the funds needed. I picked up the 17-40 at a steal of 450$, which was about half of my lens allotment.
I was looking at the 28-135, simply because it's cheap and it produces decent quality images, but It's no L lens, which I'm afraid I'll notice and be bummed about.
I don't want to sell my 17-40, I love it, I have no issues with it. In the past two months I've wanted a longer lens in two situations, and I shoot daily. The 17mm comes in handy when I'm in town, narrow streets. Sometimes the 17mm isn't even wide enough.
I do understand that there will probably be overlap, this isn't an issue for me.
I think what I should do it hold out and find a 70-200f4L for a decent price, (450-550$ frequently), and then a 50mm 1.8/1.4. That would cover the ranges I want without overlap, and for half the price. Not a bad idea? Edit: This is what I'll do. No point in selling a lens that I absolutely love for a lens that I won't use nearly as much. Thanks for the help guys.
Someone suggested selling the 17-40L in favor of the 24-105, so lets do the math. I'd get 500-600 out of my 17-40, so I'd owe 400 on the 24-105. I'd then have to purchase a sigma or canon 10-22 to cover the range I use most frequently, which would cost 450-750. Doesn't seem logical to me.


