[Fire_Warrior 032]

There was a brush on sale at my local hobby store, and it used to be $12 but it was on sale for $8. I bought it, because I needed a high quality brush and it was a good deal ($8 is a lot for a single brush, but better than $12)
It looks like a really great brush, and it got good reviews from some customers, and I want to know if any of you have had any experience with it before I take it out of the plastic and start using it.
It's a Reaper Master Series Kolinsky brush. I can specify what attributes it has (for instance, it uses sable hair) if you want. So...is it really a good brush? Or is it just pretty expensive for no reason? (More expensive than a standard series 7 I noticed, at $11.99)