At first I had chosen the collar because it gave the best best benefits, but I found out about the lucky charm that's just infinitely better since it does what the collar does better than the collar and gives a little extra, but at that point I didn't get the rabbit scene because I have shitty luck with RNG it's actually kinda amazing, but when you pick the collar the nameless says that cowering from him is a natural human response and bla bla bla so I think the rabbit dialogue would fit to you being a coward or something, but after a computer reboot and lost game data I choose the cock ring and the nameless says how he knows my deepest darkest desires and then fast forward to the farm and I finally get the scene and the rabbit than calls me a slut when I haven't even done anything slutty at the farm or even close to it so... My brain pretty much filled the gaps, so that is kind of an assumption, since then, I've been sticking to the cock ring.
Also not giving a fuck about how things are being used would fit Ruben, a lot, especially since he thinks he's the smartest person ever and any intellectual challenge is a welcomed one