Wood fill in 100 y/o+ trim/doors

I am currently restoring all the (looks/smells like) pine trim/doors in my 103 y/o house. I'm sure this question has been asked and answered before, but my newsreader must not go back far enough. Where there are dings/nail holes/whatever, I'm filling them with wood filler prior to finish sanding/ staining/ poly. I am currently using Minwax stainable wood filler ( http://www.lowes.com/lowes/lkn?action=productDetail&productId4700-24-4285 1&lpage=none ) it works ok, but I am wondering if there is a better product to use. The finish is Zar Rosewood (
http://www.ugl.com/images/chiprosewood.jpg ) thanks to all who reply
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