The Efron family’s got some good genes … ’cause Zac and Dylan Efron are a set of seriously hunky brothers!

Zac’s been a heartthrob for years … but his younger sibling has recently found himself in the spotlight thanks to his well-received participation — and big win — on the reality competition show “The Traitors.”

It seems like fans have plenty of room in their hearts for both Efron brothers … but who will rank supreme on the beefcake meter? The famous siblings enjoyed a boat day recently … and looked quite fine as they soaked up the sun. But the question here is: Who’d You Rather?!