Hi Alex,
I have been wearing an obturator since my maxillectomy 2-1/2 years ago. It's made of a combination of metal and acrylic. I have to say it fits pretty well. There are times when I actually almost forget I'm wearing it. I went through countless adjustments with my prosthodontist before getting it right. I wish you best of luck with your new one. Remember- don't settle for just an "okay" fit. Persist with your doctor, until you are comfortable. It's too important to settle for anything less!
Best wishes- and come back and report on the new one.
Michelle