I prefer the Kiss X over the Buck Off which is way to big for me and most people I know. I like to squeeze the tip of the toy to create a nice suction and stroke by pushing down instead of pulling it away from the body, which can lose suction. I do wish it had a little more texture and/or was even tighter at the base to give more stimulation.
The buckoff line of products is a step in the absolute right direction, but it definitely needs a few improvements. The material is so delicate- like a flesh light- that if you drop this sucker (literally) on the floor (or even a dusty or linty blanket), you're gonna have to get in the bathroom to wash it off right away if you wanna still use it. I personally had some suction issues, but my clitoris is not large- this is why I went with the Kiss X over the original design, but I wonder if that was the wrong choice. For the price, I think this is absolutely something to try out, it might be perfect for you, but this definitely needs a few upgrades in material before this toy will really reach its full potential.