Paul Hendren wrote in post #17677279
I''m a 7d owner right now but not overly pleased with it as other than build quality it never surpassed my 2ti in picture quality for indoor sports. I feel that both my 7d and 2ti were doing the same things. A change to the 1 series is a different path but indeed high ISO noise is a concern in low lit HS gyms
The T2i/T3i/T4i etc, all generally have a similar if not the same sensor as the 7D. But, you can easily do ISO 6400 and ISO 12,800 on the 7D if necessary, (see Teamspeed's guide on 7D high ISO shooting) while having 18MP and 8 FPS. I forgot you already have the 7D, I was bringing it up because it's so inexpensive now on the used market around $450 commonly. Those stats at that price is pretty much a steal for someone looking to do action in general.
For me, shooting my 1D mkII I've come to realize a few things.
1. I'm ok with low resolution (8MP), but it really does help to have extra MP to crop away stuff for composition or when you're already at maximum reach. After a long time, I'm starting to actually want more resolution again, but nothing crazy, 13~18MP seems to be plenty for what I do in general. I do love working the smaller files, they copy so fast, load so fast, hah. TL;DR, More resolution is actually nicer, for cropping.
2. My action shooting begins at ISO 800 even in good light generally, as I keep my shutter very fast (birds). ISO 800~1600 is normal and every day for me in decent light. This is the maximum on my 1D mkII. It's ok at it. I actually don't mind it's noise pattern (I generally over expose on purpose to deal with noise in post), but my bigger limit is the ISO limit itself. I would rather have ISO 6400 or higher, as an option, and use ISO 1600, because it will be cleaner. I guess I'm just wanting a slightly more modern sensor. I don't feel I need ISO 3200 or ISO 6400 for actual use, as I rarely shoot this camera in anything but out-door sun, or over-cast days. I'm not shooting night or indoor sports, where I know I would want faster glass and ISO 12,800 as an option right away. For now, my worst case scenario is low light under the canopy of trees shooting, which is very low light, but I'm ok with a gimbal & low shutter for that to avoid maximum ISO (perched birding). But in heavy over-cast low light, I'm generally living at ISO1600. This often has me wanting a 7D or something with higher ISO ability, while keeping the same fast FPS (8) and a little more resolution for cropping (18MP). TL;DR, Higher ISO capability is a big deal on action cameras really.
3. 8FPS, 10FPS, etc, really doesn't matter to me so much. It would matter to me if I were shooting sports where I want that perfect position in a frame series. But I don't do sports. Even in wildlife, birding, etc, one might do a full series like that just to get the right position or look. I personally don't. I like the really fast FPS because I can take my series of 3 or 4 shots in a burst in less than a second. Most of the moments I'm shooting are about that. Less than a second. So having a few chances in there is good. And I'm not wasting 1000+ shutter actuations per outting to do it (for me, I'm not getting paid to do this). It's why I went to the 1D mkII actually. For $250, you get a fast camera that is durable with decent low resolution and decent lower ISO use for cheap. But I could live with a camera that is only 6~7 FPS really. TL;DR, I could live with lower FPS.
These days, I'm considering a 7D from my 1D mkII for a lot of these reasons and because it's inexpensive.
I looked at potentially moving to a 1Ds II, but I lose the FPS speed big time (4 FPS!). I'm ok with slower FPS, but that's too slow. The ISO is the same. All I'm gaining is resolution and losing crop factor (but gaining resolution so I don't mind that). The cost is too prohibitive though, again, a 7D simply does it better in general. As for image quality, I find them neck and neck with good post processing. But the cost just put me off big time.
So then I looked at 1DIII & 1Ds III, and while they have improvements all over, they're not much better than the 1D2 series, even though I really like the idea of the 1Ds III. But again, cost just really turns it off. At that price point, I start to realize how close I am to a used 7D2 and that seals the deal there.
For now, I rest at the 1D mkII until I cave...
I think overall, for where you're going in direction, it would be good to go ahead and just spring for a 7D2 or 1DIV depending on overall needs.