Venus 2000. 'nuff said. https://venusformen.com/
How do you watch the videos when you're handling your business?
midorijin Hah! I get your concern, but it's an isolated system. The motor moves a diaphragm in and out, there's no pump, and the change in pressure inflates and deflates the tan colored rubber inside the tube. If there were a leak in the system, it would just deflate and not work anymore.
typically recliner chair...problem is family flying downstairs when i'm blind and all lubed up...it won't be pretty
finally got adjustable bed in downstairs room....locked door, works great
midorijin Oh right, something about a penis pump mode.. never tried that setup. Even with that, there's only so much pressure that can be built up with the diaphragm. It looks kind of like a plunger with the handle attached to a wheel on the motor, so when the motor spins, it plunges. So that moves air back and forth in the system, then there's a valve box with a button to let excess air out of the system, and a button to let air back into the system. So you can get a light vacuum by letting excess air out, while it's plunging away, but it's not going to be a dick bursting vacuum. Hopefully that makes sense. I think it's a pretty clever design, but I'm a nerd, like that.
Oh, have my bed adjusted in Quest 2 as an Sofa, put on an condom and never be worried about any mess... 
Always with a Fleshlight, sometimes sitting, sometimes lying.
It depends on the video. Typically I'm either flat on my back, leaned back in a chair or if I'm in my bed I'm laying on my left side. Controller in left hand, fleshlight in my right. And of course I have my headset on so I can crank the volume.
Laying in the bathtub with the shower head on and toilet must be flushed at least once before strapping the headset on. 
Oh and disco light on. 
Vrsumo2017 Sounds like you know how to party
2 months later
bet it works great...with some great FACE missionary clips...had a few in mind and never could find that pussy toy from 20plus years ago
seems like it was made for this kinda thing
need to probably turn off the boundary protection
Usually laying down but, like the OP, I don’t like to have the cumshot in that position as it just ends up all over the dude’s stomach instead of the girls face or mouth.
It all depends, but I quite often mimic positions according to what's happening in the scene to make the experience feel more real, whether standing up in front of the model as she walks into the scene, sitting down when she's facing the camera while on her knees, laying down on my back when she's on top, etc. Most of the time however I prefer laying on the bed with some pillows behind my head.