dang lol, i love em both! but i voted snakes.
lizards IMO tend to show more personality, bc they have more distinctive body language

snakes are FASCINATING to watch, more soothing to handle (stress killers), and way easier to maintain

i just said snakes bc i want my pets to slow down my day, not excite me =p

but i REALLY want a beardie cuz they're soooo cute and exciting. just dont have the time