I booked a limo with Tony the Limo King. He was recommended by the Anaheim/OC Tourist group.
He charged me $50 each way...which didn't seem bad at all considering he was on my schedule. We only had a limo one way because I didn't prepay, but that was fine, we just needed wheels.
There's a playground for little ones, a public shower and bathroom, and right next to the beach there's a shop that rents body boards and other beach supplies. If you'd prefer to not haul things cross country, it is very handy.
Lots of people were walking to nearby shops and bringing back pizza and other food. There's an ice cream shop across the street that has delicious huge cones!
It was a very family-friendly beach. There wasn't anyone causing trouble, drinking, etc. Even the groups of teenagers there were friendly and having fun.
If you have time to go early, the area is an artist's colony-type environment. I think the older kids would enjoy visiting some of the shops in the area, too.
Mind you, I have no experience with other beaches so I can't compare, but for us, Laguna was a perfect fit!