http://www.nikonchat.com/nikon-p90-vs-canon-sx20/
(Canon PowerShot SX20 IS) vs (Nikon Coolpix P90)?
Nikon P90 has better technical specifications in general. as the optical zoom (24x vs 20x), larger LCD (3.0 "vs. 2.5"), less weight (16.2 oz vs 19.8 oz), a better opening of the lens (f/2.8-5.0 f/2.8-5.7 vs ) better ISO range (64-6400 vs. 80-1600), and the price ($ 335.95 vs 381.87 dollars). The only specification that the Canon is better is video (1280 x 720 vs 640 x 480 for P90). You can not really go wrong with either camera – your choice.