Have you tried the Sony SLT for yourself? Because from your comments it doesn't look like you have. I have tried both the Sony SLT and the lower Canon EOS models and the EVF on the Sony is better IMO. It has several advantages.
You don't get 100% viewfinder coverage on the 600D like you do on the Sony SLT cameras. This is a feature you normally have to pay a lot to get on a Canon SLR. Also the viewfinder is much bigger on the Sony. It's also nice to see exactly what the exposure will be like before you press the shutter button. I wouldn't call the Sony a "gadget" when it has features a pro would love to have.
Are there any reviews comparing the SLT to the 550/600D EOS cameras? Being very much a beginner in the world of photography I'm not a fan of either, nor know much about either.
Thanks again Devrij for your input
