I have a 2018 MX, bought it with enhanced autopilot and got sucked into FSD at $2K when the "discounted sale" was on.
Is there anything I've gained in V10 based on FSD vs Enhanced Autopilot?
I'm not certain, but I believe you have hardware version 2.5 or 2.0 (H2.5 or H2.0). Anyone who has these and purchased FSD will get upgrade to H3.0 which is many times faster. It is not clear when this will happen.