The 80D is a much better camera than the T6i. They can go on sale for cheaper than the used prices you cited, and they come with a one year warranty from Canon. You can find the 80D in the Canon Online refurbished store at significant discounts that will surprise you. I don't know if either of these cameras would be good for that or if there is a specife lens tha would help with that.

The one other thing I like to do is photo my whippets running. I would assume all these will fit on the Rebel 6Ti and the 80D? My lenes: Canon EFS 17-55 F/2.8 IS USM, Canon 24/105mm L Series, Canon 50mm F/1.8 The other lens that has been suggest is the canon 70-200 f/2.8 II USM Is it worth the money to go to the 80D or will the Rebel give me enough to improve my pictures. I've seen used 80D for aroound $700-$900. However, I can get a brand new T6i for about $500 bucks new and the 80D would be over a grand. So is it worth jumping into the Rebel T6i or the 80D? It seems the 80D has the better rating and may be better in low light. I don't know what the future holds in this so investing tha much in camera doesn't make sense right now. I've read that not all lenes that fit crop sensor cameras fit on the full frames. The bigger sensors allow more light in but the price point on those are steep and then lenes for them add more cost. I realize the full frame is probably the best way to go long term. I have a friend willing to sell me one of those for $400 bucks. I been told that would really help, and I understand the glass you use does make a huge difference. One of the most consistant suggestions have been to get a Canon EF-S 17-55 F/2.8 IS USM lens. When you only get 3 songs to shoot, time runs out quick. So I'm timing lights and when people are still. I am having to decrease the shutter to get the light but if the subject moves, its blurry.

The limited ISO on the 2Ti isnt' helping. My L lens does not have the F stop to grab things very easy when it's that dark. The big outdoor shows with stages that have front lights have been pretty easy. A 24-105mm L series lens and a little 50mm f/1.8 lens. I've been surviving with my Rebel T2i an two lenses. I'd never shot before so it's been a learning curve. About a year ago I started covering concerts for a website. Seen some good discussion of the upgrading from the Canon T2i.

Refurbished canon t2i for sale