Well lets start out by saying that ive owned 2 BME engines and i am amazed at their power and duribility. Now 3W on the other hand.... I dont know about their 150's or bigger but i do know that the 3W 106 needs some improvement. 1 3W could stand to upgrade the ignition a little and not be soo cheap on that. 2... Anybody that know or has owned a BME knows that they are light and very powerful. Now i belive that 3W could stand to make even their "light case" engines even lighter. But i guess those germans must like heavy things. 3 last but not least i bet anybody in this forum that has a 3W 106 that they wished they would have gone with a BME because i can almost gaurentee you that any BME 102 EVO will out pull any 3W 106.