I use four of these scans for about 3 years.
I programs with scanCONTROL contest (which I think does not use the maximum performance of the DMX 300).
I am satisfied with this product that produces a good brightness.
With 4 scans, no problem to fill a large room.
It is true that internal programs are not great (too fast for example).
It is unfortunate that the logos do not turn on them-even (but good for the price ...)
I have not tried other scans.
I think this is the base product for good scanners Reduces budgets (good stuff for cheap).
I am now heading towards plutt lyres ...