Awesome distortion for making extreme kickdrums. I use it mainly for creating Hardcore kicks and it is working great, the additional filter effects make a great variety of sounds possible and it is working well in FL Studio. I would recommend this plug-in, free and the pro variant.
I also had a small problem, and within 3 hours I got answer by facebook, solving my problem.
The best way of creating great sounding kickdrums in going really low with your original sample and then make this plug-in do his job.