Milking Devices and Advice

Hi everyone! I just joined this forum and am relatively fresh to self bondage. I was hoping the men here could offer some guidance on milking devices. I’m aware of the Venus 2000 and the robojac, but finding information about the latter has been tricky for me. Additionally, I’ve spotted a “SeriousKit” milker that appears quite robust; it’s designed to connect with the vacuum pumps typically used for cow udders. Has anyone here tried these machines? If you have, did they work well?

I purchased an inexpensive milking toy previously, but it only lasted a few uses before breaking. To put it mildly, I was very let down by that experience. I’m also considering setting up self-bondage combined with forced milking sessions to continue afterward. My guess is that some form of random control would be necessary for this… does anyone know if such devices include that feature?

Apologies for the barrage of questions! It’s a specific area of bondage where I have no background, and I want to gather advice from those with more experience before committing fully.

Thank you