Its hard to pic a favorite because they all offer different sensation, but one remains supreme. It's not the virbrating dildos, or buttplugs. It's my wifes Manhandler dildo sword. She uses it like a pro. What is at the top of your list
Any toy that she initiates use with. She's not a fan but sometimes uses a small one on me. Wish it was more often.
My wife likes a 7 inch by 1 1/2 inch dildo/vibrator that looks and feels like a cock. She can use the vibrator on her clit or fuck herself with it. Her second choice is a 9 inch by 2 inch monster that fills her. It also looks and feels like a cock and vibrates.
I would like to take the 7" one in my ass and I would use the larger one on my wife. She doesn't seem to mind taking a bigger toy and after she warned up she seems to bounce back to normal so there is no harm done. I don't mind stuffing her full then using my cock in her after. It's just play