Not gonna lie as much as I love Erynn as a character. I do find the Alexis path alot more fun and exciting personally. Just with going on dates , the beach scene , the club that path feels just a little more fun ( not including sex scenes) than Erynn's as a path. Don't get me wrong I do love parts of Erynn's path especially the wholesome parts but with the Ethan stuff haven't even really gone on a real date. While you could technically count the photoshoot as one I don't as that more just to be there to support and protect her than a real date.
Lexi's path feels the most like a real relationship for sure, they get into it pretty damn fast even fucking on the plane in Episode 1 and then meet again at the bar in Episode 2 where you can hook up with her after. The game also gives you these nice dates with Lexi, so of course her path feels the most romantic and exciting.
Erynn's path is more of a slow burn one where you can see and feel the attraction and love between them, even if you are on someone else's path. The upcoming beach date is the closest and first that we are getting to a date with her, especially after things have started heating up between them.
So for me Lexi is the instant gratification option, nothing wrong with that btw I love Lexi. And Erynn is the slow burn option that you will probably even have to slay the dragon (Ethan) to get, but IMO it will be worth it.