I have 3 HW100's a .20 cal thumb hole long barrel, a .22 cal thumb hole long barrel and a .22 cal bullpup long barrel, all are super quiet, plus the 14 shot magazine is the best magazine made, you can also increase shot count by swapping out the cylinder to a Ratworks cylinder or get a Bottle adapter, the trigger is Awesome and accuracy is pinpoint, the side lever action is smooth as silk, they also like Croman Dome or HP pellets, and you can 3D print magazines from open source, Parts Available from D&L airguns in Canada, they ship to US fast.
the Daystate is a great gun too from what I hear, I don't own one, not sure who handles parts in North America.