I didn't find my Saito .72 to be more fuel effecient that the Irvine .53... I got 8-10 minute runs on my .72 and 12-15 minutes runs with my Irvine using the same size tank.......

I did like the thrust of the 4 stroke... I liked the power as well... Maybe I just didn't give it a far shot.... But it seamed to me that since I like my 2 strokes sooo much, why am I trying to force myself to like the more expensive 4 stroke??? I just wondered why I was trying soo hard to like something that just wasn't my cup of tea.... Great running motor... just not my style... I guess I like it when the 2 strokes "scream their guts out"....

Oh well... To each their own.