run 3/8" or 1/2" PEX supply to toilet?

My first post here, Awesome site!

Based mostly on the great information and reviews here, I'm planning to put (4) Toto Drakes in the house I'm building. I plan to plumb all the supply with PEX/Manabloc, with home runs to each fixture.

I had been assuming 3/8" runs to the toilets would be fine. But I read a post (somewhere) by a plumber who said sinks are the only fixture they would run 3/8" pex to.

How much slower would a toilet tank refill using a 3/8" versus a 1/2" PEX home run? Thanks!

Peace,
Sanaka

Just plumbed my new basement addition with Pex - the other 4 bathrooms have existing Pex. Every plumbing fixture in this house is set up with a home run to the manifold... except 3 of 5 toilets. In every bathroom where the toilet is relatively close to the lavatory, the toilet T's off the lavatory cold water supply - 2 of the 5 are home runs as the toilets are "miles away" from any supply lines. - and every line in the house is 1/2". I have no filling issues or pressure problems anywhere....

For what it's worth.... and it was free!

pex

Personally, the only fixtures I WOULD run 3/8" to would be the toilets since the smaller lines might just mean it takes a bit longer to fill. Everything else I would want the highest flow possible.