As we search for a bull

My wife and I of 25 years are what are termed “age gappers”, meaning that we are 12 years apart in age (me being the elder). With me being 63 and her 51 things have begun to change in our physical relationship. We introduced a vibrating dildo into our bed several years back to help me satisfy her and she took to it quickly. She even went as far as to give her new toy a name, “the chief”. For years now, when we head to bed for a lovemaking session, she yells out, “honey, get the chief”. One thing about the chief is that he is longer than me and thicker than me and I have found it extremely erotic to watch the chief just disappear inside of her body. Her eyes reveal that she is just lost in the feeling of riding the chief roughly while giving me pleasure either with her hands or her mouth.

She wants to go another step with the dildo (maybe larger and thick), but most of all more realistic. Can anyone recommend a particular brand that they have used to stretch her a bit more? Thanks !!