Paper for drawing with watercolor and dip-pen.

I want to try coloring with watercolor, and using dip-pen inking for character outlines.

So I've been searching on shop, looking for a paper suits my needs, and affordable price .

The target paper has to be....

For coloring:
Can spread out watercolor nicely.

For inking outline:
The paper should not spread out the dip-pen ink.
Very smooth surface for dip-pen inking. Rough paper can damage the nibs, causing them to 'catch' onto the surface


And finally I found it!!!

Cotman Watercolor Paper(B4)Weight: 242g/㎡ (extra thick) hot-pressed
水彩専用の紙（コットマン水彩紙(細目)）

Actually... I did inking 3 illustrations with it.
Please see blow link for my inking videos.

http://www.youtube.com/watch?v=rGBGQZ3TpqA
http://www.youtube.com/watch?v=yaXA3nMBr6k
http://www.youtube.com/watch?v=ZOYiQPoVHr0

But .... i was too lazy to do watercolor... so I colored them with computer...ha