PROP FIRMS?: Anyone have experience with TopstepFX, FTMO, etc?

Does anyone have experience with any of the ‘evaluation to funding’ prop firm companies?

I’m curious to hear peoples’ experiences and/or why you stayed away from this model. I’m pretty new to the Forex space, but have been getting a lot of ads for these types of companies and would like to hear from people who have considered this route.

TIA!