@Peeks like one of those fuck me silly ass? but don't know if they're any good at all

@Peeks You can also try the hips made by Tantaly. Reviews and videos on them look good and seem solid in terms of quality and size. You'll likely want to look at the Louise or the Rosie models. They seem true 1:1 scale, big, good jiggle, good thought put into the tunnel design and pretty well priced for their sizes. They are also ready for K9 but technically full 3d hips not flat bottoms- i.e. almost like have the lower half of a torso, so Mish and other positions are pretty much all on the table. Only issue I see really is they are pretty heavy and whether their sculpts appeal to you vs the others listed. If I wasn't already happy with Akarri, I'd probably try one myself.

@Peeks Not sure what your budget is or what aesthetic your after and if having a flat bottom ready for K9 hip vs an all around 3D hip matters to you.... and also how soft/jiggly you want it. But for sheer size the best bangs for the buck are the Frenzy Innocent Eimi Fukada Ass and the KMP Minami Baku-Jiri Hole. Both are pretty big- around 13"wide and at least the ass is true 1:1 scale. But the Minami is super firm, almost no squeeze and no bounce. It's styling is slightly more realistic and is of the fun round bent over 'just-the-ass" category than the class all fours/FDAU Ready for K9 Ass the Eimi Fukada is. The Fukada is softer, more bounce but I hear tunnel stimulation is pretty low.

Hips like the EPH Gen 3, Hobomeko, Namajiri Switch, Lili's Backside and Office Lady Yuzuha are all just a bit undersized. Reasonably big. Can maybe fool your brain for a petite girl but generally hover in the 10-11" wide range or around a 30-31" hip.

There are big American options like any of the US Porn Star Asses The Bree Olsen, Carmen Luvana etc, the Cyberskin Perfect Ass, or more deluxe options like the Zero Tolerance Kendra Lust ass Stroker or the Fuck Me Silly. But the issue there is US made toys usually either have quality control issues or really bad tunnel stimulation without nearly the thought/pleasure built in that more Japanese toys have.

Back on the Japanese side, you can try the Monster Wet Kinami, maybe special order the NPG Miracle Angel Hip (basically the Japanese knock off to the Fuck Me Silly), Or try the KMP Maji Hada Imai Kaho Hip, or Maga Kore Maji Hada Mesudachi's Big Ass. But these are all fairly expensive, the Kaho hip has the same super firm/no jiggle issue as the Minami and while I have and enjoy the Mesudechi ass, it's still pricey, squeezable but not on the softness/jiggle scale as the EPH 3rd gen and it's still IMHO a tick undersized to true 1:1.

If you want to go super big you can look into Chubby Narumi's Thicc Ass Megahip as a special order. It's BBW styled and huge at 19.6 inches wide.

Honestly as said already, IMHO your best overall bet is the Akarri's Buttocks. It's my current fav hip. True 1:1 scale, around 13" wide or about a 36-37" hip. Super soft and jiggly. pretty good stimulation on both tunnels thou the anal is definitely more intense. So far pretty durable and the stupid mini feet aren't really seen during use. The only thing going against it is the price but I think it's worth it.

@Peeks Read comments here: https://www.toydemon.com/community/site-related/feature-request:-read-all-of-a-specific-users-reviews#c-post-2171

tl;dr get Akari's buttocks

@Peeks Maga Kore Minamisan for size, but for jiggle and bounce go with Akari's Big Butt