MAC300 I use for some months now. It's a good sturdy and well built machine.
The three-color is nice, with beautiful blue but still no red convincing. Martin fills the hole with a dichroic filter installed on the color wheel.
The MAC300 starts accusing the years since its release, and today we can reproach him for his movement speed too slow. It has a power honorable, which is well within the range (neither exceptional nor disappointing).
In nine, the MAC300 is no longer an interesting machine. However, it can be used to find a less than € 1000 making it a better investment (there is a reference).
I have yet to test the MAC250 Wash in benefits, but I have seen with Martin that it was already faster than the 300. He also apparently a much better light output.
In conclusion, the MAC300 Wash is a pleasure to use on small and medium-sized benefits is a great value that is found throughout the park rental.