Not sure if you are still looking for info...but we have used the posh teaser. once on her once on me. she seemed to enjoy it alot. the big end was a little adjusting to, shes very tight but got used to it quickly. got her off rather quickly. said it was strong enough, but not the strongest.
as for me, occasional anal play. head area was rather big on entry an took some work to get past. once in felt good. vibrations were great for me. but end was big coming out as well...but thats with me anally.