I bought my purple Eosin Deluxe belt back in Nov 2012 the day after I got promoted, knowing that I'm going to be at purple for the next few years AT LEAST. I thought I might as well splurge. I've been very pleased with how it's breaking in. I washed it once right after it came in the mail to get the creases out. After 6 months, the color has not faded and the belt is just now starting to droop gently at the ends when I tie it. It took about 3 months before it would stay tied. Up until then, the belt would become untied as I ran around the mat during warm-up, and it would never stay tied when I rolled. I expected as much, because the belt felt much more dense and stiff than Atama and Koral belts. Since I wanted a belt that would last a long time, my Eosin Deluxe was perfect. Currently, it stays tied usually for one 5-6 minute round, only becoming loose toward the end of the round.
In short- Eosin Deluxe is superb quality, dense (not overly thick), stiff, vibrant color, with long break-in period. Built for the long haul.