What are the best driving routes from San Jose to Southern Pacific Coast?

I have taken annual trips to Costa Rica since 2004.... always going to the Southern Pacific Coast. First several years I took either Route 2 down to Palmar Norte to meet 34, (or sometimes 3 out to Orotina to meet 34 by Jaco and take the beach route down... although back then before it was paved that was not always fun).... last several years it's 27 al the way to 34, and 34 all the way down the coast.

I was looking at a map today and 239 appears like it would be a good route to take, and it looks like it would save time going south.... is it a good alternative to 27-->34?

And what about Route 2 to San Isidro, then Route 243 to Route 34?

Sorry for all the driving questions... it's always a long travel day, if we can shave off a few hours of driving, it would be nice.... and in Costa Rica, what looks good from a satellite might really be 100km of dirt road with land slides, pot holes, and river crossing without a bridge.... I rather not be that adventurous!