With large in both generation/type, I don't find a noticeable difference with band fit or fitting under clothing like the huge difference in what you see. IIRC, it was state about 30% more fit in the newer types.
My wrist is small for male and for sure my daughter's but this family all prefers the large because ease of reading when you're active. You get faces that display more apps or complications.
For sure try the two on but if you're active or like certain apps consider how you might have better overall function with a larger display.
This is if a deal on a S4 is out there. A few people I know find the always on with Series 5 a deal breaker. I thought I'd want that but not so much as time passes so the right deal on a Series 4 could be worth considering too.
To conclude, I consider all the choices to be fine products. How you use the watch and what apps might mean dealing with a large is worth it. A trip to a retailer will be best way to help make the right decision.