I have a Hismith machine, the one with the wired control box and wireless remote and phone app control. I use it for anal/prostate mainly (dear lord to all men who do anal play, this machine is the TRUTH it is powerful and does not get weak), but I got the velcro elastic strap attachment for fleshlight-type toys.
Its great for fleshlight use! You just have to look at where and how you'd use it. The machine only stands so high, so if you're on your knees it works great. I like to sit down on the floor, prop the back leg of machine higher than the front end, and let the machine fuck my cock like that. You can change speed perfectly its seamless and very smooth. But the wireless remote has pre-built in fuck settings so it goes fast-slow-fast and all kinds of mysterious combinations. First time I used it I didn't know it had settings like that so it was a shocker, just make sure you're really lubed up good. The app control is great too. I haven't used the Hismith for this kind of play in months now, I will soon now that I'm talking about it lol
Personally though, unless you have the almost $600, its too expensive of a fuck machine to use for just your penis. The Fleshlight Quickshot auto machine or the one they just redeveloped for traditional standard sized fleshlights is your way to go. You'd save almost $400. Check those out and think about your use. Also the FL fuck machines are versatile and you can carry them and pick them up and use them in all kinds of positions. The Hismith machine has versatility but limited on positions you can get yourself into.