For now it's none of the one's that I own, but I've been holding off on purchasing new brushes (like I need any more). Well Lumiere is having a pre buy sale for anyone interested. You won't receive them for at least one month or more and you will be purchasing in advance without prior testimonial however with the excellent reputation of the owner Kim and her fine company I personally wouldn't think twice about it. The savings is fantastic and you can check out the pictures on Lumiere's website.
Just thought I'd pass this along for anyone interested