I'm 3.5 years removed from being a newbie. I average between 85-100 mi a week on road & gravel bikes. I rode flat pedals for about 6-8 months before following the advice of several in my group. They recommended Crank Bros eggbeaters. I've been on them ever since on multiple road & gravel bikes. I like the feeling of being connected w' the bike. I like using a super stiff shoe (Sidi Tiger) that doesn't flex. I started w' a cheaper Sidi w' hard plastic soles & will probably never return to them.
I do intend to try the larger platform of Shimano SPD SL road pedals soon. I have the pedals & shoes, but have been reluctant to mess w' what's been working for me & just have not taken the time to switch.