You've covered most of the ones that this blog recommends most highly… I dunno, maybe since you already have many onaholes, you wouldn't mind picking up a larger hip-style onahole like Puni Ana DX Hard or Twins Panic. You could also check out Infernal Monkey's blog and just buy whatever he recommends. Not sure what to say beyond that.

>>621
I don't have any room for hips so they arent an option.

Ah, that's unfortunate. I suppose you could just go through whatever Infernal Monkey's recommended, like:
http://infernalmonkey.com/2015/03/08/ninpu-no-susume-pregnant-knocked-up-knockout/
http://infernalmonkey.com/2015/01/27/r-20-puni-insert-clever-pun-here/ (since you liked the R20)
http://infernalmonkey.com/2014/12/16/virgin-age-graduation-masturbators-degree/ (if you didn't like Admission, might not be for you)
http://infernalmonkey.com/2014/11/26/hidachitukko-plus-dx-championship-edition/ (rough)
http://infernalmonkey.com/2014/11/10/seventeen-evo-soft-what-seventeen-is-evolving/

I can't really speak from experience, though.

>>626
Thanks for the recommendations, I went with the seventeen Bordeaux and R20 Puni. Hopefully these won't disappoint!