Wood filler???????

Hello all, I'm having trouble with the wood filler I'm using. It seems to crack too easily. I just don't like the results I'm getting from it. By the way, I'm using Elmers wood putty.
Does anyone have any that they would recommend for filling in cracks and screw holes? Also, could you list where I can find it. I plan on using trim to cover most of the seams but I need something that will fill in the screw holes and a few seams that I will not be covering with trim.
Thanks for any help.
Does anyone have any that they would recommend for filling in cracks and screw holes? Also, could you list where I can find it. I plan on using trim to cover most of the seams but I need something that will fill in the screw holes and a few seams that I will not be covering with trim.
Thanks for any help.
