I have also built a 6wt. It has worked well and is enjoyable to fish. Based on quality, I would have no problems buying another one. My only issue is while I have never had to use the warranty, according to their web-site it is a flat $75 charge. That is a bit steep for a $49 blank (depending on which one you buy). With quality companies like Batson who have a limited lifetime warranty, I think would rather get one of their blanks since they will stand behind their products better.
Again, I really like the blank I got just not sure if I would do it again unless I consider it a no-warranty blank.