Hello,
I think Bintel Sky View II (
https://www.bintelshop.com.au/welcome.htm) could be a great match with a 100mm refractor. I recently got one of this for my 6" SCT and 72mm refractor. While in the Bintel show room, I got to test mount a skyWatcher 100mm refractor and found it handled it with ease. In the future, I'm planning to use it with 100mm refractor that was why I test mounted to make sure. At home, with my quick short test use, the slow motion controls work quite well, very smooth.
In addition, I'd like add that this is the same mount as being sold as AT Voyager in US.