Regarding "good" kami, I have been very happy with the duo/double color
stuff I've found at Michael's stores in the USA. It folds well, but of
course is not white on one side.
Michael's usually has a 40%-50% off coupon weekly, and if you're a
teacher, you get an additional 15% off. It's a nice way to stock up.
I also see A.C. Moore and Michael's offering sales on sketchbooks. I use
them for making simple notes and then "recycle" the pages to make
envelopes and boxes.
I like the Canson Mixed Media pads - they make very sturdy models.
Rob