With my son-in-laws SIG. Performance and handling wise they are very similar. The SIG controls would be more familiar with AR shooters and the CZ control very familiar to MP5 shooters. Both are very well made and have a solid quality feel. The CZ is a good bit less expensive, and the mags for the CZ are half the price of the SIG so that an advantage for the little CZ.. The proprietary CZ sights are outstanding with 4 different aperture settings. [IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i6.photobucket.com\/albums\/y217\/jimcope\/CZ%20Scorpion%20EVO%203\/ef9a1dbe-9abb-43cb-90a9-a57fafed5d1f_zpshv8z136u.jpg"}[/IMG2]