I've got this old Wacom graphics tablet. (It isn't actually that one, it's the model before that one; the Sapphire CTE-430 but, as I said, it's old). I hadn't actually used it much until recently, when I decided I was going to use it enough to form an actual opinion.
I have now decided that this thing is the bee's knees. It's amazing the difference it makes in Photoshop. Go buy one now and start using it.