Heavily quantized Qwen3.8-Flash vs Q8 Qwen3.8-27B - thoughts?

I'm currently choosing between IQ3_XXS Qwen-3.8-Flash and Q8_0 27B.

This month I don't have anything complex enough to justify either's potential so I've got a fairly bad read on how these two stack up in terms of intelligence.

Have any of you compared the two enough to speak to which you've had a better experience with?