I would stronly urge anyone using Mastercam or considering it to read this thread on the offical Masteram forum. It now has over 37,000 views, is 32 pages long and shows what Mastercam users think:
http://www.emastercam.com/board/index.php?showtopic=65520&st=0
Jon Banquer
San Diego, CA
http://whymastercamisthewrongchoice.blogspot.com/
SolidworksGeneral