After comparing a plethora of sandboxes elsewhere, I decided on  the Convertible Cedar 4' Rectangular Sandbox from Wayfair.com.  The wood complements my garden... no bright red plastic lobster staring back at me!  My son loved playing in it yesterday and I loved playing along with him. The attached benches easily expands as a built in cover when you are not using it and the canopy protects our little ones (and parents) from the sun. It's affordable, the quality is very good and easy to assemble.