Which control board to choose for 3.1 500?

Hey Guys, i lived in the marlin and duet world - until now. I would like to try ratOS but have no clue which board to choose. The possible boards are shown in the ratOS documentation, but bigtree techs website didnt help me too much to decide.
Which board would you recommend or even advise against?
Printer is an 3.1 500, fairly standard for now. lightweight CPAP VZ-Printhead, I want to enclose it, heat it to 70-80°C and print „reliable fast“, no crazy high speed. Money is not no object, but i‘m willed to pay for quality & reliability.
Thanks