As is typical, my rear view mirror fell off. As far as I can tell, it's a stock porsche mirror. However, the mirror is no longer clear so I'd rather just replace it with something that I can see with better.

I was looking at the suction-cup style ones from Amazon. Any thoughts?

https://www.amazon.ca/Mirror%EF%BC%8CAnti-G...urce=1&th=1

Personally, I'd rather have one that mounts off the center visor clip holes, but that seems like a lot more work.

Any universal mirror should do the trick and give you more flexibility.

I would restick the factory mirror and grin and bear the fog, new ones are very very expensive, and the universal ones do not mount properly

There’s the E30 BMW option.
There are threads about it.

I harvested a rear view mirror from an Isuzu Rodeo SUV and glued it in my car. Slightly larger, but it comes with two (2) small built in map lights which really illuminate the interior at night far better than the factory backrest light ever could.