For the price, the E510 offer a lot.
It has important manual controls that are not usually found in this price range:
Shutter Priority
Aperture Priority

It will be a huge improvement over a Mustek.

Here is a review of the camera:

http://www.steves-digicams.com/2004_reviews/fuji_e510_pg5.html

Should you not be pleased with the E510, I would suggest you look at the Canon A520.

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