That all depends...I used to use pies from the bakery at Giant Eagle grocery stores pretty exclusively. however, they quit selling their cream pies. after crying in my beer for a little while, i've been constantly searching for pies i like as much as those. i've been occasionally using bakery pies from walmart (the quality is hit or miss, depending on how long they've been on the shelf), marie callender's frozen cream pies (they seem to work well when left out overnight), 10" frozen pies from GFS and once in a while i'll make some just using a graham cracker crust, a couple pudding cups and a tub of cool whip. i hope that helps!