Where would be a good place to look?

Is always my favorite, big wide sandy beach, some people but not super crowded, waves are good if you're going into the water

Depends on what you want...I agree MB has the best beach, though Hermosa is good as well....I think Hermosa has more nightlife, but MB has some as well....But neither will be cheap and you get more for your $ in Redondo - but stay away from the pier are and go south to Avenue C or higher

A location in between Hermosa Pier and Manhattan Pier would be great for avoiding the pier crowds. Start looking at around 30th St. In Hermosa and you'll see the beach crowds are lighter and you'll have as nice walk to either Pier along the bike path.

Manhattan Beach - generally more expensive, better freeway access (105 and 405)

Sepulveda.  An old Manhattan Beach saying.  All of the above is true, but I found a hot lead in MB.
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Good Luck

With this sexy lady, any beach she is at will be improved............

Any beach you are at will become much better