My first OKI printer, C511 and I'm very impressed by its speed and quietness . I am really amazed at its photo printing qualities , even on standard low settings it prints just like a print from a photo printing shop . The adjustments that can be made to printing colours are amazing , but the instructions for their use , also for installing the machine could be more helpful and explicit especially in regard to drivers etc for non highly technical readers . It took a few tries and some guesswork to install. I love the small size and overall design , and the on /off switch at the front where I can reach it under the computer desk . I chose OKI because I know they produce business machines , which are always the best buy , plus they do auto duplexing on all models , not just the most expensive .