Summary: Performance wise the CLP-550 does quite well and there is truth in its printing speed claims of 21ppm for monochrome and 5ppm for color (I actually timed it). One thing I have noticed is that the brightness of the printed images seems to be a bit on the darker side.
Conclusion: The Samsung CLP-550 offers an attractive set of features for the price, with a 250-sheet paper tray and a built-in duplexer. But it falls a bit short on the basics. In particular, text quality is low for a laser, and performance is less than stellar.
Pros: Excellent paper handling for the price, including built-in duplexer, 250-sheet input paper tray, and 100-sheet multipurpose tray.
Cons: Text output quality is low for a laser printer. Performance is slower than the engine rating suggests.