Question about dual monitor resolutions

I currently have http://www.misco.co.uk/application [...] 16&CatId=0 as a single monitor but i am looking to upgrade to dual monitors. My current monitor runs at 1680x1050 but i was going to purchase a second 22" monitor that runs at 1920x1080 as that would be an improvement. But i have a few questions. I've heard that have two monitors of different brands and styles can be slightly irritating in terms of style and secondly, would having two different resolutions make the taskbar look wierd going across? Thanks

you can download third party programs such as ultramon to extend the taskbar across both monitors