I went a little wild and bought Cadmium Orange, Malachite, and Turquoise Green Deep. I wanted colors that weren't in any of the smaller sets and these are all really lovely! They do get rather opaque if you lay them on very thick, then they dry glossy and a bit sticky (the darkest colors are a little more matte but still shiny.) They spread well and are as vibrant as the swatches. Very interesting to play with; I'm an absolute novice at watercolors so my techniques aren't remotely advanced. A tip I found on another website is that you can fit up to 6 of these into an Altoids Tin! Just keep the plastic sleeves to help separate them. :)
(Note: some of the blues are other products: the color over the word wash is a cheap alcohol marker for example and the big splotch of blue on the far left in the sky is a Le Plume II watercolor marker. The badly drawn unicorn is entirely Gansai Tambi/Aquagraph as is the grass, the water, the ground, and most of the sky. Even the outline is the brown pencil. If something looks super weird, it's probably because I messed around with it after it dried.)