I've got one, branded as a Hillbrick. Seatpost clamp design isn't great, I shimmed the post and used some carbon prep, haven't had an issue since.
It's a stiff frame (I'm in the largest size which I think is 57cm tt), probably better suited to short events than say points or madison. Having said that I rode mine in the World Masters Games scratch (10km) this week and will do it again with the points as well next week in the Masters World Champs.
Best frame ever? No. I still want a BT. Best bang for the buck? Absolutely.