This is definately the best and most used plugin in my production lately. It has everything I need from a sequencer: it is greatly randomizable, can fix to scale, resizable and very CPU and RAM-gentle.
Being a fan of sound tweaking I need someone or something who can take responsibility for generating different properly scaled notes while I am searching for the sound. Once I am done with that I can readjust the generated rhythm. So this thing became my assistant I've needed so much.
Besides that, about HY in general, if I have any issue and email them about it, and always get a fast response.
WOW! I'm the (lone) reviewer of this plug, and the newest version (30 March 2018) is even better. The UI is even more gorgeous, and it is now an absolute modulation monster. Prepare to be lost in it for days -- in a good way. :)