I just purchased a 2300 china made ST and the outside finish isn't any worse than my 2500 from Italy was. Myself com paired to the European engines this looks like a caddy .The 2300 runs like a charm on the bench as soon as the planes done I'll see what it can do in the air .My son has a ST-51 and that hummer screams a 11/7 prop14,200-14,500 on 15 % fuel best I've seen a older fox turn a 10-6 was 13,500 that was a 45 good engine but heavy.