I tried most of these boards
The Coiler EC is a good board but the Extremecarver Pro is better to make EC, and has more versatility. You can use it even on soft snow or moguls, with the same easiness.
I tried also 2 Bulat : 168 and 175 (both with fiberglass construction). The 168 is a poor board. No dampening, lot of vibrations, awfull sound on hard snow. Definively an unpleasant board that works only on good snow. No fun to ride it.
The 175 Bulat is worse. One of the worst board I ever tried. Way to hard, difficult to turn, and as the 168, no dampening.
as Nils said copying the outline doesn't make a good board.