While I think arousal and relaxation are bigger factors, different shaped aneros give me different results. I started with a helix trident and I feel like it originally gave me the most intense sensations, but it tends to be inconsistent for whatever reason. I also have a eupho which feels good but never got much out of it until my fast few sessions with it.
Last two times I have used the eupho I was moaning into my pillow for 15 minutes straight. I think the more you use the aneros the more control you get over the device. Because the eupho is so thin, its harder to control and it takes more muscle control to be able to “relax into it”
I have a progasm but besides the novelty of being filled up, it doesn’t do anything for me in terms of dry o sensations. I know some people swear by them but for me its more like a buttplug for me. I feel like its using a stick of dynamite to dig a hole when you can just a shovel.
I use to feel that lots of lube was super necessary, but I have achieved my best sessions with using mild-moderate amounts of lube. Little on my finger, little on the device put it in and take it out once or twice and Im good to go. IMO too much lube is like jerking off with too much lube. I also find too much lube trigger the feeling of having to use the bathroom.