It is not large -- it takes 4X the output power to double the brightnessIf the difference isn't huge, then I think I'll go for JetLasers. Also just remembered the PL-E Mini has a protective outer lens, which is another plus. Depends on what you mean by huge, of course.
As ArcticDude and Wakrah have said you can't go wrong with JetLasers -- they make excellent high quality products w. features other makers do offer, they stand behind and are proud of the products the make + the customer service is the best of the best both before and importantly after a purchase. They want olny happy customers and will do whatever it takes to make a satisfied customer.