If you haven’t bought this yet, I’d seriously consider trying to get a sit on one. and have sat on a medium which I’d say was on the small size. (For reference I ride a medium in Santa Cruz and 17.5 in Trek). They do feel very small. There is a company in Scotland called Sprockets that sell them. Their head guy Dave has one. He’s around 5’10”and rides a large.
I'm hiring one in Spain next month and was advised that Orbea's sizes come up small, I ride a medium Orange which seems to be about the same size as a large Orbea.
I am 5“8.5 and Large is great, I wouldnt wanna have it shorter! You def. need to go Large, absolutely no question!
Rather consider XL then S/M...
Could you share your inseam? I'm the same height as you with 32 inches inseam (81 cm) and I'm a little worried if I could run 150 dropper (probabbly slammed all the way) on the L size. No local dealer has it in stock so can't really try
I'm also 5'8 with about a 32 inseam on a large. Bike looks pretty big but feels just right when sat on and I've also got 2cm of the post out of the frame.