Hey DN! Im looking for the best fine point pens for sketching. I would also love to hear about general sketching tips.
Sticking with gel pen, the Uniball Signo line is great too, very similar to the Hi-Tec-C. 0.28 can be scratchy, but 0.38 is great, nice roll on all kinds of paper. http://www.jetpens.com/Uni-ball-Signo-UM-151-Gel-Ink-Pen-0.38-mm-Black/pd/306
As for ballpoint. OHTO makes some nice pens. The needle-point on jetpens writes almost like a velvety pencil. And, the size makes it super easy to carry everywhere. http://www.jetpens.com/Ohto-Needle-Point-Slim-Line-03-Ballpoint-Pen-0.3-mm-Black-Body/pd/6728
Then to round it off, you always need a good fineliner! http://www.jetpens.com/Uni-Pin-Pen-01-Pigment-Ink-0.28-mm-Black-Ink/pd/7281
this is going to evolve into everyone's favorite items on jetpens isn't it?
I haven't tried a lot of pens, but I love writing and drawing with the 0.3 hexagonal ballpoint Muji pens.
Hi-Tec-C. I like .04. I know a lot of people who use .025
I like to sketch on 11"x17" paper. I have a template that's the size of an iphone 5 screen that I trace like 5-6 times on a paper, then use the bottom half for general ideas.
I'm rubbish at not losing pens, so I rely on Papermate Flexgrips most of the time. They're cheap and they do a good job. However, I also LOVE my Tombow brush pens (http://www.tomboweurope.com/abt-dual-brush-pen-en.html)... Generally I'll do basic sketching using a ballpoint, and then use light coloured brush to add a bit of depth. Generally better to use these on thicker sketchpad paper, and depending on the paper, they do bleed a little. I still love the effect they have.
Was introduced to them by Eva Lotta-Lamm, who uses them for her sketchnotes. (http://sketchnotesbook.com/)
I really like felt for less-detailed work. I find Sharpies & Copics too thick (and they bleed through everything but marker-pad anyway); my money is on Pentel Sign Pens for the best pen ever.
+1 Hi-Tec-C. been using .3 for over 10 years.