Advice on mouth guard

Getting back into Muay Thai after a long break. I was thinking whether to get a Hayabusa or Venum mouthguard.

The previous mouth guard I had (bought a random one off Amazon) felt really uncomfortable and I kept feeling like puking and I’m not sure if it’s just cuz I’m not used to it, or cuz i might have a slightly smaller than average palate since I was born without wisdom teeth (not sure if this actly affects anything). But anyway, comfort would be a priority for me.

Does anyone have any thoughts on which one is better? Thanks!