TPE vs. silicone and sizes: menstrual_cups

TPE vs. silicone and sizes

So, I purchased a small MeLuna cup because it seemed like the best size for me and didn't realize until after I got it that it was TPE and not silicone. I know from my extensive research on sex toy materials that TPE is not considered quite as safe as silicone. I figured since I'm not sharing my cup it shouldn't matter much, but after using it for a cycle it seems to be holding on to some odor and discoloration, even after boiling, so I'm a little concerned. Has anyone else found this to be more true of TPE cups than silicone? Looking at the size chart and comparison photos, it seems like MeLuna is the shortest cup available. It's only a millimeter difference in length, but going up to the Ladycup or Naturcup looks like a big jump in the pictures and the small MeLuna is sometimes difficult to maneuver into a position far enough inside me that the end doesn't stick out. In fact, I'm tempted to order the totally stemless MeLuna just to help with this problem. I currently have the ball stem variety.
So, what is your opinion on TPE vs. silicone?
And if I'm going to switch to a silicone cup, given that the MeLuna works but only just, which cup would you recommend switching to?

TPE vs. silicone and sizes

MeLuna Soft variances

Problems concerning menstrual cup - popping open, seal, getting out

Trouble finding right cup

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