I also have one and I can confirm that it’s a hell of a mouse. I would recommend it for nearly every type of intensive computer work: web browser stuff, CAD, software development, spreadsheets, editing tasks, anything really. I’ve had people try to convince me to switch before and I never believed it’d make a difference until eventually a friend (mechanical engineer) just gave me hers and now I can’t live without it.
Tip, if you don’t want to use the Logitech bloatware the apps LinearMouse and Mac Mouse Fix are both open source and help you get some of the advanced functionality back.