I love both brands for various reasons! But if I had to choose one-hands down the TH distressed inks.
The distress inks are so much fun for distressing and blending-plus you can use the same blending pad for multiple inks and the color wont transfer between the various pads. So I just have one foam pad for each color group instead of one per ink color. There is so much you can do with the distress inks, I've recently been using the adirondack paint dabbers to stamp, and using the inks on top of the paint. The paint resists the ink and you get this great look. I used it on the background of this page.
Looking Forward By MrsAnnieS
The colorbox I use if I'm actually stamping or need color for the more detailed edges of flowers.