We use Canon in general because of their amazing compatibility with a wide rage of formats. The ZR-Series is no exception. You are able to achieve high quality with ease. The VIC chip makes a big difference when you are importing a lot of video to edit on your PC/Mac. You'll need to pick up a Firewire for $10-15 because Canon doesn't include one in this box.
I recommend visiting http://www.canondv.com/zr90, there you can view videos of this camcorder. That will help you see if this camera is right for you. Sony, Sharp, Panasonic and most every respective brand have similar videos on their sites to help you compare. Of course Amazon.com has the best prices.
Also I find it very odd that nearly every negative reviewer ends up mentioning Sony as an alternative. As a professional I wonder why someone wouldn't mention Panasonic, JVC or Sharp now and then. You would have to spend at least $595.00 to find a Sony that compares indoors or out. Even then you won't find features like Canon's Digic technology.
If you are serious about sound you really need a boom/shotgun microphone no matter what brand of camera you use. An external mic will help you capture directional sound. For voices, wireless microphones will always give you superior results. You can then mix both boom and wireless feeds to create dynamic sound. Unless you are shooting pro video the Canon mic is adequate and features a handy wind filter if you decide to activate it.