I'm in the same boat. I've used progressively larger toys and my wife likes them a lot but she loves the feel of the real deal. Unfortunately so far she has declined my request to try another guy. She teases me but won't actually do it. I'm hoping she'll take that step eventually. Right now I just have to work on enjoying that full feeling and recognizing that I don't give her that.
Here is the silicone man in my house. She does him more than she does me by about 4 to 1. He owns her pussy and I do notice her size if I go in right after him.
fender