I just ordered a Semogue 830. Hearing about how the brush loses some of its backbone when broken in, and how soft the tips were, I decided to give the brush a go. My 1305 is a nice brush, but oddly mine has a little scritch to it, and I really wish the knot would open up more than it has. What can I say, I like 'em a little floppy. I figure the 830 should be right up my alley.