Please forgive the thread resurrection...As a younger man I worked for Arbiter in their brass and woodwind department. I can tell you that the basic 'Pro Sound' saxes were pretty much anything but. They were fine as starter saxes go, pretty much bog standard in construction, made first in Taiwan, then China. The 'Jazz' models were a step up, made solely in Taiwan and the 'Jazz II' a step further still, double key arms etc. They were made in the same factory and to the same specs as other more expensive brands.
They are well worth getting if they're in good nick as the brand name puts people off and bargains can be had, in fact I have just bought one for a good price which will hopefully put my Grassi Alto into the eBay pile. Yes, this is partly nostalgia on my part but they were decent horns.
As an aside, while working there I also got to try possibly the world's worst sax, a demo model from a factory in Vietnam which played a semitone out Low C to middle C, I guess the wrong length neck, but it made for some fun 'Les Dawson' moments in the warehouse during lunch break.