Setup of classes

Not a very suitable title, but I don't know how else to describe it ;-) In pear do you prefer the usage of classes to be: require_once "ImageGD.php"; $im = new Image(); . . . require_once "ImageIM.php"; $im = new Image(); . . . Or do you prefer: require_once "Image.php"; $im = new Image('GD'); . . . ?? The first way requires less overhead, but the second is neater IMO. Both ways would still requre the user to define a constant in their application to state which image library to use, so neither one's easier to use. Thanks, Peter. -- Maple Design - http://www.mapledesign.co.uk