Best anal vibrating butt plug

I am looking for a butt plug that vibrates. I want something that I can use myself. I do not want one with watch batteries. Something that has a strong vibe would be great. I am looking for one that will stay in while I am cum. I would like one that would be flat enough on the outside, so if I am having vaginal sex with someone I can have the plug in my ass. This will not only pleasing me, but also my partner. Does anyone have one they can recommend? Thank you

Never tried this one, but it vibrates.

http://www.extremerestraints.com/inflatable-dildos_42/vibrating-anal-expander-probe_5963.html

I have also been giving inflatable vibrators much consideration recently , i need something with serious vibes to my prostate and/or bladder when inflated . I've never used an inflatable device up my ass before so i need the very best of advice , i have often thought about a balloon and balloon pump but would such a pump be able to inflate a large balloon internally ?

I have an inflatable one with a vibe that never worked. it will blow up, but not vibrate.

I have not gotten one yet, but you might try Wand Essentials Ride-N-Vibe Magic Wand Attachment, which is a realistic penis-like thing, complete with balls, that attaches to a Hitachi Magic Wand. It costs $25-30 from Pink Cherry or Amazon. You cannot get a better vibrator than the Hitachi. The only problems that I see is that it will be bulky and you will have to hold it in rather than having an inflatable to keep it in. Holding it in is not all that bad, for you can move it in and out and fuck yourself with it, or have someone else do it to you.

hankb