The 70-200 2.8 IS is a great lens. Spendy yes, but it’s worth it. The IS does make a difference. I balked at it until I bought a lens that has it. Now I won’t buy a long lens without it. depending on what you are shooting you might want to look at the 100-400 IS. I just got it and for shooting wildlife or airshows its fabulous.
B&H has decent prices but Buydig.com beats em. I’ve bought a ton of stuff from them over several years so don’t worry about them being a Broadway Camera type outfit. They are a solid vendor. No hanky panky grey market bait a switch garbage.
If anyone has a 17-40mm they want to part with at a decent price lemme know.