this is my second (or third?) round of purchasing brushes from Tressence.com and it's always a great online experience!..my waist length hair has known nothing but mason pearson bristles for over 2 decades..i've worn a couple of the small ones out they were heavily used when traveling & also lived in the car for repairing disarray caused by wyoming winds..tangled waist-length hair hasta be hard on those those cute little brushes..a couple of the large ones perished to teething puppies..but not replacing those worn out or chewed up remnants wasn't an option..the only dilemma: which size?..so i've alternated between the Extra and the Popular..both are awesome but the Popular seems better at holding up to my mane..over time, the Extra has had a tendency to shed bristles..either way, these are the only brushes i'll use and tressence.com is definitely the best place to buy them