Yes, I sharpen the pics in Photoshop if they are useable to start with, but I still cannot get the pin sharpness that I see with standard 5D pics online. But so many are just too soft with little detail.
I am not sure if viewing image quality in the LCD is flawed, I would at least hope to be able to assess whether or not a pic is sharp and the LCD on the Canon doesn't help me here. The Nikon D300 certainly does.
I used to use a Canon 30 and for a short time had a Canon 1V too. I never had any problem with the pics being sharp. I have some amazing prints. To be honest, I wouldn't say I have had more than 5 shots from the 5D that compare to the film shots out of my EOS 30.
Even if Canon fix the apparent problems with the 5D I am so disappointed with it I can't see myself using it again.
One other suggestion, what about the Pentx K20D? Again, a bit on the heavy side though.