DropDMG is an excellent, excellent Mac software!! Additionally, the Help menu and its formidable instruction set is excellent and extremely helpful, not to use a pun. I tested out several other dmg-makers for my Relativity Calculator Mac software which is still a work-in-progress, and the only other one which even came close was EasyDMG but I was still inclined to buy DropDMG because of its formidable capabilities! Besides, its $20 price is very, very reasonable so I therefore have absolutely no complaint about this price. Best regards, Don Saar, drdonzi@crocker.com, contact@relativitycalculator.com, www.relativitycalculator.com