Personally, I like the Metro. The hand controls are better and easier to operate than the Grav and it's easier to adjust just about everything. I defiantly would buy kohler. Both are good engines. But Kawasaki parts come from Kawasaki, hence, more expensive. I can get Kohler parts anywhere and are much better priced. At least that's how it is by us anyway. Also around here though the Metro is about $600 higher than the 150. A 48" 150 is $2195 and the Metro is $2749, this is, of coarse, with out negotiation.