You are welcome Emphram! I'm still experimenting with Exfat, but from what I've read raw recording performs better. From what I've tested so far, I feel it is a great format. There is also an exfat option to choose in the Magic Lantern Nightly Builds menu, which I still need to test. I was able to record 1080p for 29:59 with continuous record. I still need to test 720p 60 fps because I would like to see if I can get to 29:59. I used to be only able to get around 15 minutes. I also haven't found the batteries to wear out, and last just as long as Fat32 formatting. If you are having trouble with missing a couple seconds in between takes, try adding a second camera. Even if it's a cell phone that can record HD, you can use that for just those couple seconds to switch between scenes in post if you are filming an event for example. Also, if you record audio to a separate recorder, you can maintain the same audio throughout, and just sync in post using Plural Eyes, Premiere Pro Creative Cloud, or manually. You can use the cell phone and dslr audio along with separate recorded audio to sync, and then choose what you feel sounds the best, probably the recorder.
I love shooting raw! I'm still getting used to it, and am learning as much as I can about the post production workflow. My recommendation for getting the best resolution is to use a wide angle lens. Luckily I have a 6.5mm fisheye I use for skateboarding, and will be able to take out the distortion with a fisheye lens profile in Adobe Camera Raw. If you have the kit lens, try using it a 18mm, the widest, and see how you make out. This will help when filming events, say on a shoulder rig for less camera shake, and your kit lens might have an image stabilization option which will help as well. You can also zoom in as what's called crop mode. Some Magic Lantern users have claimed this gives better quality, but I find it a bit difficult to work with. When zooming in 5x, you can bump the resolution higher. Setting up the shot is kind of a pain, but this might work well with outside with flowers and insects. If doing macro, you can buy macro extension tubes from Fotodiox on Amazon as well. I would suggest trying different resolutions at different aspect ratios (2:35:1 rather than 16:9 gives a cinematic look, which is great) and see how long you can record. Also, turning off unneeded settings will help extend the record time. You can even try 18 fps or 12 fps to achieve longer record times, or even continuous recording for raw. Recording raw with sound can slow down the best possible resolution for raw recording, and even more with audio override settings. So keeping the sound on automatic helps, and then using say a Zoom H4n or H6 for separate recording to sync later. There are even cables from Sescom that will allow straight audio recording from the Zoom to the camera. There is a Transcend 64 gb Class 10 600x (90 mb/sec) sd card which is the same price as the Sandisk Extreme Pro 32 gb 95 mb/sec Class 10 sd card. I've read and discussed with someone that this works just as well as the Sandisk, and then you have double the space for the same price!
If you want to record H.264, you can purchase a VAF TXI filter for the T3i. This helps prevents aliasing and moire from being recorded in your video, and also gives better compression, resulting in better quality. You can call Mosaic Engineering and ask them about their filters which have marks on them. They are fully functional, and do not prohibit best possible quality from the new ones. New, the filters run at $295. I spoke with one of the personnel about this.
I hope this was helpful for you, and please let me know if I didn't explain things clear enough. Always here to help! Hope all is well!
The problem with raw that I have is the following:
Noise is a lot more visible (especially in low light, and I mostly work in low light, and have to use high iso, 1600, 2500).
Aliasing is alot more visible (anyone else have this problem? I think using it in 3x crop mode the problem goes away, but I can't use 3X crop all the time).
Chromatic abberation is a lot more visible (but easy to fix in adobe camera raw).
Still confused by workflow (mainly because of lack of progress).
Need to get farther away from subject to get same composition (I work in a lot of cramped spaces, sometimes it just isn't possible to get farther away from the subject).
Lack of money to buy wider / faster lens (most lenses that would help improve my shots are not within my financial reach, I don't do video full time, my full time job is web dev and so far it's been supplying my turtle slow acquisition of equipment, skills and experience).
I'd much rather have the 650D or 700D for raw at 720p, that would be much easier to work with in POST, but again, not enough funds. I barely receieved a light kit today, I wish there were some online video work I could from here that would help me further my acquisition, but so far nothing has come my way.