I've been intrigued by the brush pens at JetPens but didn't want to get one before I could try it. So while browsing at Kinokuniya I had the chance to play with a Zebra Disposable Brush Sign Pen with a fine point, and decided on the spot to adopt. This is amazing, it feels like I'm writing with liquid silk. The pen glides smoothly across the paper with no drag, and has two different looks to it, depending on whether I hold the pen at a 90 degree or 45 degree angle. The 45 degree angle has a wider line, but both look really nice.
There was no bleed through on the Doane Paper but there was a very definite dark shadow, making this pen ineligible for double-sided writing. But somehow I don't think the pen minds very much; it doesn't look or feel like a delicate writing instrument.
I am definitely going to get a few more of these, and I know they have the Extra Fine version at Kinokuniya as well as several Pilot Brush Pens I've been thinking of purchasing. The only drawback, and it is minor, is that I feel I'm going to crush the brush tip if I press too hard. So I am holding the pen very lightly, and my hand is starting to cramp. Tho' I suspect the pen is meant for a light grip, built to dance over the paper the way a brush with black ink on it does.