Did a bit of research on this about 6 months ago for my work and hunter was definitely the lead name brand in that game. We were able to pickup a used balancer setup that has way more options and capabilities then I'd have ever imagined existed for about $2000. You can find other hunter models quite a bit cheaper for sure but we were looking for a few specific work related options that put us at a bit higher up model beyond just slangin tires on and off. Coats seemed to possibly be about 2nd best in the industry.
Didn't look into changers though...
I know, not a TON of info by anymeans but it's a start. I was able to get in touch with the Hunter rep that services Vegas and he actually is the one that connected us with the seller of the machine we bought. Basically a tire shop looking to update/upgrade and we bought the old unit. May be worth looking into for your area...