Pull starts rob 10% of your engines hp and also robs rpms. Plus if your lazy not havin to pull a pull start is nice.
I seriously doubt that. There's no reason for a properly made and lubricated one-way bearing to pull 10% of the power. Sure you'll lose a *little* bit, but I would be surprised if it were more than 2-3%, if that much.
I'll take pull start anyday... Less junk to haul around, more reliable starting IMO, and easier. The only time my engine takes more than 3 pulls to start is if it's extremely cold.