I like WAM where the model vocally reacts; moaning and groaning, squealing, getting pied mid-sentence and being muffled, that sort of thing. Can anyone recommend videos that fit the bill? I prefer humiliation, so not stuff like laughter.

Pretty much any video with Kym or Candle Boxx

If you like humiliation there's Paige playing the codebreaker and then there is Allex in savoury DJ Quiz she squealed whole way through

I've been scavenging the Anglefan archives for a while now and I've found that model Amber is usually pretty good with disgusted/annoyed reactions. With the exception of a few of her scenes (in her very first one she can't stop laughing ) her stapled is gasping, groaning, and acting annoyed as she gets repeatedly pied and slimed. Check some of those out

My stuff. Take your pick.

My personal recommendations would be "pied and predjudice" and "meathooks Olde pie tale" but really you described everything i have ever made.

Genuine reactions from my other half - be they positive (caution: some laughter!) or negative including yelping, screaming and groaning, "I hate you!" and calling me a "cunt" etc. I once received a request from someone that a warning be issued about the audio levels!!!

As long as you like a buxom English milf wondering WTF she's let herself in for, you might enjoy (25secs into the trailer)...

https://youtu.be/-8aKJIMee3E