Being in a relationship where my role is versatile bottom, I miss the sensation of topping; however, having the clear Fleshjack has been a great improvement to my personal sex life and to the sex life of my partner and me.
First, it's hot to be able to see my cock through the clear casing that is the Ice version of Fleshjack. It's sexy to see my dick (or my partner's) slide in and out of it.

The material from which Fleshjack is made is truly unique. It gives soft, gentle, velvety and warm feel (you can put it in warm water to heat it for an even more realistic feel in seconds). Just be sure to add water-based lubricant.
To get right to the point, there is not much that feels better than sliding your cock into a tight, moist, warm, soft (in my case) ass. That sensation of sliding your cock into name-your-orifice is AMAZING- well, Fleshjack gives me that feeling! It's toe-curling and exhilarating. Instinctively you want to start thrusting your hips to pound the Fleshjack.

It's great when I am by myself to use it with just my hands or to prop it between pillows to fuck it. The Fleshjack has also added an extra dimension of pleasure for me for when I am getting fucked and my partner uses the Fleshjack on me simultaneously- a feeling of being in a 3-some!

It's downsides: While it's easily cleaned by running water through it, it does take 1-2 days to dry out. I leave mine sitting out on my bathroom counter, but those with frequent visitors or family may have to find a sneakier drying place.
Also, since the general cleaning is so easy (rinsing just with water, or occasionally with rubbing alcohol), I am not sure how easy or safe it would be to share with a non-monogomous partner within the same session unless you absolutely used rubbing alcohol. But let's face it, who of us is going to stop a hot session to run and rinse a toy with water and alcohol. Buying two solves that dilemma- and that's not a bad dilemma to have at all!
A minimal suction sound comes from use, but nothing that will wake up the whole house.

I would definitely recommend the Fleshjack- and the Ice version of it for you voyeurs.