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The Canon SX-20 and the Panasonic FZ-35 dominate the super zoom market niche. I looked at both very closely, and decided on the FZ-35 as the better choice. The FZ-35 has much better high ISO capability than the SX-20 and shows less electronic noise. That was a large issue for me.
The SX-20 is a very competent camera, but the FZ-35 matches up better with my shooting style. Unfortunately, Nikon has not done well with P+S cameras for the last two years, and the Nikon L-100 has continued that poor performance record.
Have a great day.