All of my DLE engines including the 30 ( I have two of them) have very acceptable vibration levels. By way of comparison, the 55 seems quite a bit smoother than a G-62 and even the DA50 though not as smooth as a Taurus 52. The 30 is way smoother than a Saito 180. I have not found the 30 to be a shaker at all as others have reported. Frankly, the 30 is one of the best engines I have ever owned.

Now if I want to shake up some paint, I'll get out my old Quadra 75!! Still a good engine though.