| I've had 4 blata reps now, 3 were just standard reps, 1 is a blata SQ. I've found the SQ blata rep to be the best bike i've had yet.
I have spare frames of both the wavey circle designed frame and the normal type.
The only issues i have with the blata is the waterpump, as wbr mentioned you won't know when it breaks. But they do last quite a while so you shouldn't have a problem.
I haven't used a polini rep, but i'd prefer a slower bike with a stronger frame.
The peg mounts on the blata are quite weak but they are cheap and relatively easy to changeover.
One other thing with the blata was the frame not always lining up, so at times you might have to "ENCOURAGE" the frame to sit right while you put the bolts, but once its together they are perfect. | 
