Bests & Worsts Reviews from Amazon

I have very mixed feelings on these pens. The colors are WONDERFUL. The sparkle is amazing and shows up really well. They write smooth, I adore writing with them. The biggest problem I have is each pen (at least the set I got) did not hardly last two days. I can almost watch the ink drain as I write. I wouldn't say I write a TON, but I work in an office and am writing all day. I love to have different colors for each day so I can easily identify notes or orders from that day. And who doesn't love sparkle?? Even most of the colors go on thick enough for me to copy and fax well, except silver. But for only lasting a day and a half I can not suggest these. In the picture with my pens, the purple, blue, green and black had only been used one day, the yellow for maybe an hour at most at the time of the picture. I do realize these are art pens and I realize that glitter ink has to be more fluid, but even then, I would imagine you would use much more ink coloring and that these would drain very quickly.