Having nearly reached the limits of this thinking of an upgrade to this.
Since I finally managed my large king cock (only took 18 months, but worth the wait and dame fun) the options are open for some other toys of a similar girth:
or
And more lube. and possibly
And was just reading through this post Prostate Massagers and a slightly awkward question - #11 by Kitty-Cat01,
So now thinking about this: