I have used PaperMate Flair Felt Tip Pens off and on for years, and I find them to be a very reliable pen. I presently have a pack of four, with a medium tip and in the color black. These pens are very comfortable to hold and very easy to use for writing.
I have never had any problems with the ink bleeding through the paper or with smearing, most likely because the ink is water-based. Drying time is very quick as well. PaperMate Flair Pens come in different colors, but I mostly rely on black or blue for my writing needs. They also come in different tip points, and medium is the one that works best for me.
One pen gives me a good bit of usage before it runs out of ink, and I have found it very easy to write with a PaperMate Flair. The tip goes smoothly across the page, making writing a pleasure for me.
For comfort and ease of handling and writing, I would definitely recommend PaperMate Flair Felt Tip Pens. These pens have always done a good job for me.