Does anyone know what the absolute cheapest SD cards are that actually work reliably in the Canon R6 without making the buffer hang for like ten minutes? I just spent way too much on the body itself and now Im staring at these card prices and crying a little bit lol. I really need to figure this out by next weekend because I have an engagement shoot booked here in Chicago and I realized I only have one old 32GB card from my T6i which obviously isnt gonna cut it.

Ive been doing some digging and I saw a lot of people recommending the SanDisk Extreme Pro cards because they are basically the industry standard but then I saw some threads saying you HAVE to use UHS-II cards if you want to do any kind of burst shooting or 4K video. But man those V60 and V90 cards are so expensive it is actually insane. I saw the Lexar Professional 1667x which is way cheaper for a UHS-II card but then I saw a bunch of reviews saying the casing is cheap and they fall apart in the camera which sounds like a total disaster.

I also read that the R6 has two slots so maybe I can get away with one fast card and one slow one? I read that some cameras will slow down to the speed of the slowest card if you are recording to both at the same time for backup which is what I want to do. If I buy a Kingston Canvas React Plus because people say its the best value V90 card will it even matter if my second card is just a cheap V30?

My budget is really tight right now like maybe $100 total for two 128GB cards if thats even realistic. I mostly do stills but I use the electronic shutter for high speed stuff sometimes. Does the buffer fill up instantly if I use a regular UHS-I card or is that just for people shooting 4K 60fps video all day? Just trying to find that sweet spot where I dont lose shots but also dont have to sell a kidney just for storage...