Well Maninder that's an interesting question which in no way am I qualified to answer. However it dosen't stop me from having an opinion! So here goes; I think when you compare the 30cc Homelite based engine to the 31cc typical Ryobi you will find that the Homelite is better made in terms of bearing size, rod & crank construction and cylinder configuration. Therefore it seems that on the surface the 30cc Ryobi blower would be the better deal. But, there is an even later version of the 31cc Ryobi then was mentioned in my earlier post. While it looks kinda the same and does have the same rod, crankpin dia, and piston it is piston ported ( no reed) and turns clockwise. I have only seem them in blowers and both I have are in good shape internally though the blowers had stopped running for some reason. Also,There could be some other engines now under the Ryobi banner that are better designed and built the either of the versions we have been talking about. If it were me I would go for the cheaper one and then use the extra money for something more pleasurable then blowing leafs..............Bob