This was the newest thread I could find on the 3rd Space Vest so decided to turn off lurker mode and resurrect it somewhat.
I have used the 3rd Space in conjunction with my JetSeat and bass shakers, and while I would buy the other two first, the 3rd Space Vest can be used to give the best direct feedback of G state (and a few other things) since the rumbles of the other two can get muddled in the exact rumbles' cause. When all 3 are combined the tactile feedback is a poor man's G Seat.
Now the problem is that I currently don't have it working with DCS. I'm using PS Cockpits 1.0.3 and while it will make my vest work with BMS, I keep getting a PS Cockpit's Error 6 code trying to get it to work with DCS despite following the recommended procedure. I'll post up here when I'm able to work through it or just in case there is somebody else that has it working. Until then, maybe this will put this put the 3rd Space Vest on few of your radars since these can often be found on eBay for a good deal and I think they may still be in production. If you are into tactile feedback, it adds an important layer.