Difference between solid roller and flat tappet

Don't forget the Hughes Engines way. They have some very light weight flat tapped lifters they say can make some of their solid camshafts on par with a roller. It wouldn't surprise me. I agree with the budget comment, of course...LOL...BUT you also cannot overlook the differences in durability and wear with a roller versus a flat tappet. It's gonna all boil down to what you want. I know at this point, if I had the extra money I would build a solid roller motor. You only live once. But that's me in the now and IF I had the money. I don't.