Even though you're more of a pencil girl rather than a liquid type for the top lining, I would consider trying the Superslick liquid liners at the Mac counters. The tips are felt but firm so you can greatly control the thickness of the line. It also seems a lot faster to apply than regular pencils. It lasts all day too! As for bottom lining (which is what I normally do as well), I still prefer the UD 24/7 pencils like you already use. I actually did a test with them on my waterline and I still had a nice thick line (not perfect but still great). If you don't want to top-line, maybe you might want to try in-lining the inner rim of your top lid. It makes your lashes look thicker. It doesn't last nearly as long so you need to touch up occasionally, but UD pencils really are the best for those as well.