Originally Posted by Kokin
My gf just bought a 2mo-used Panasonic Lumix GH1 ($580 for body + lens from ebay), it's more of a compact DSLR, so it's much more portable than the Nikons and Canons mentioned. You may be able to use custom firmware that lets you increase the bitrate of HD video recording, granted the firmware in the camera is old enough. It's in about the same price range as the T3/t3i if you buy it at full retail price.
Not sure if the video is from a custom firmware or official, but it's beautiful regardless.
I'm not a fan of m43 myself
I find the ergonomics/user interface to be a bit limited and cramped for my big hands.
The other issue I have with them is that there's a definite lack of lenses for the system. I personally love the selection I have from Canon, especially with fast primes, and can't imagine living without it. Also, mounting any lens other than the 16mm pancake makes the camera big and heavy, which kills the portability (a huge selling point of the m43 system).
I mean, for someone who just wants to do casual photography and just wants something that works, the m43 is definitely a viable option. For someone who's looking to get into it as a serious hobby though, I have reservations against m43.
Originally Posted by RealEyes
Sure it's good if you've got tiny hands. If you got bear claws, like me, you need something with a proper grip.
The image quality and color will amaze you, though and I'm sure the video is fun ^^
Why I love my 50D. Even the Rebels are too small for my hands!