I wouldn't recommend the 600D if you want to do video. For stills it's perfectly acceptable. Auto-focus will feel slow compared to a modern cam. If you're going for an old / budget cam, try and reach to the 650D or 700D, those are a newer generation of hardware.
200D is much newer, but less well supported by ML. I own this cam and am actively working on improving it. 200D has DPAF, which means considerably improved auto-focus, especially for video. Also it can run Doom.
Are there any ML features in particular you're interested in?
200D is much newer, but less well supported by ML. I own this cam and am actively working on improving it. 200D has DPAF, which means considerably improved auto-focus, especially for video. Also it can run Doom.
Are there any ML features in particular you're interested in?