Con: NONE!! (No returns, but you will not want to!)This 30 count is a STEAL at $10!! I already ordered 2 more.#1 - These are not the same size as Copic. They are closer to the size of a Sharpie and the look of a Tombow brush marker (except shorter). EXACTLY what I was looking for!! Almost squealed with glee when I opened it!!ROUND barrel (not square, so they will roll off the desk).They arrived in a box, so you'll have to get a case or pen holder.Labelled on each end with number and abbreviated color. Example:R 11 is redY 37 is yellowMost of the ink matches the kids, but you'll need to make a color chart because it's THE PAPER you use that determines the color (true with ANY marker).In the pics, I used plain old 26 lb cheap copy paper. There is VERY little bleed from side to side (staying inside the lines). On make paper (VERY smooth paper) they will be INCREDIBLE!Yes, they bleed through the paper. So do Copics. Put a sheet of cardstock under it (true with Copic too). Get single sided image coloring books.I have NO IDEA how to blend ... not even sure what that means. See pic with crisscross. I laid down the yellow first, then used red/blue/green on top of it. Then that bottom yellow line is on top of those 3 colors. <shrug> best I could doEasy to hold and control.Feels high quality in weight and general appearance.Vibrant, juicy colors. Perfect array of colors. 3 pink, 3 blue, 3 purple, 4 green, 1 black, 2 grey, 2 yellow, plus oranges and reds, plus 3 or 4 skin tone colors that should cover most ethnicities/races.BEST PART??!!They dry without streaks!!! A TRUE alcohol marker. As close to Copic quality as you're going to get at ANY price range!!These are PERFECT for detail work ... like those itty-bitty spots that are even too small for a gel pen.I've bought at least 8 different sets of alcohol markers and 20+ different brush marker sets ... and these are THE BEST hands down.I'm not an artist. FAR from it! I just do coloring books, but I like the final result to look like an adult (mostly) did it. No streaks allowed!!These pens are PERFECT! Buy one. It's only $10 and you will be SOOOO glad you did!PS: NO, I was not paid to write this ... probably should be though! LOL!! I just know that I rely heavily on reviews and avoid the "no returns" like the plague. Since this is the 1st review for this product and I was EXQUISITELY HAPPPY, I wanted to support the vendor for such a high quality product ... the ink, the pen ... EVERYTHING.NOTE: Coloring books are usually printed on multimedia paper. That means the PAPER will eat up the nib quickly. This is the fault of the PAPER, NOT the marker nib. This is true of ANY and ALL markers or other felt tip pens/markers.NOTE: ALL markers, especially alcohol, will bleed from side to side (staying inside the lines). Takes practice, but if you start in the middle of the lines, you can touch up where the bleed doesn't fill in to the line. (I'm art deficient and challenged, so if I can do it .... ANYBODY can!)