I just bought the wonder wave and after what seemed like an eternity (okay, only 4 days), I finally got it on Friday. I'm glad I had the whole weekend and my roommate was gone, because I was cumming and hollering like crazy. It felt like it was forcing the cum out of my me. It was that intense and my dick was still tingling afterward. I think I busted about 3 or 4 nuts and barely left the house.
Make sure you have enough lube as it can dry out easily, but if you have too much lube, you risk losing sensitivity. So, it was a lot of fun practicing figuring that out!
I used Astroglide, and it worked just fine. Don't use an oil based lube, as it can damage the material.
But yes, cleanup is a pain, especially when you have to get up to go to work in the morning. I'm trying to relax after I bust a nut, but I have to get up, and throw the insert in the sink (thank God I have direct access to my bathroom!) and rinse it out. Really inconvienient.