I love my CS40M to pieces and absolutely will never let it go. It's such a versatile machine. The filter has a character of its own - I don't think I'd call it weak. The HPF is wonderful and the LFO routings are insane.
My favourite unique feature of this machine is where you can take raw sine wave outputs from the oscillators and mix them with the filter output before it hits the VCA. With this method you can create a bass sound around a highpass filter sweep and still have lots of deep, low-end energy in there courtesy of the sine wave. This is what makes the CS40M a "gotta have it" instrument among drum&bass producers in the know :)
I am at work right now, but I'll watch your video when I get home.