The Physician's Formula Eye Booster 2-in-1 Lash Boosting Eyeliner has a calligraphy type of tip rather than a felt or brush. This is the first time I've ever used one of these and I have to say I now prefer it! I know that the kpalette 24hour liner, kat von d, lorac, and shiseido ones have it but it's a little out of the price range I'd want to spend on a liquid liner pen that I don't know will dry out within a week or so.
Shown in Ultra Black
I purchased this at CVS for about $10. Physician's Formula has always been on the pricier side of the drugstore lines but I think it's reasonably priced. I'll definitely repurchase this after I run out. They usually have BOGO 1/2 off so buying two at a time will most likely be the cheapest way.