I like Hedges Perry, but they both sound totally fine imo.
As for the constant refrain of "what will they do when they marry", I'd like to point out:
Not everybody changes their name on marriage, it's a trend very much on the way out in many countries (and never even took off in some!) and I've always been puzzled by how persistent it is here in the UK. My mum never changed hers in the 70s, almost none of my friends growing up had a "family name", and I never even considered changing mine.
Going forward into the next generation is a bit trickier, but again I'd say:
Not your circus/monkeys, let them figure it out.
If it were up to me, I've always favoured a sort of more egalitarian twist on the Spanish system: so women would carry forward the matrilineal name, and men the patrilineal one. So practically for me it means my grandkids via my DD would have my surname with her future partners', and through my DSs would have my DH's names, with their future partners'. Confusing but also... simple? 😆