i totally agree on that. i guess i lean more towards a TC. it doesn't really make a lot of sense to me in robbing away 20hp from the crank to power the blower, and making an extra 50hp (might be wrong on the numbers, but you get my idea). on the other hand, turbocharging doesn't rob the car of any power, but it'll make that 50hp easily.Your right, there are many turbocharged cars out there, but there's a reason for it. Greater efficiency. There's no valid argument that using energy (velocity of exhaust gas) to create more power is not more efficient than drawing power from the engine via crank to create boost. When speaking of cars, friction is not our friend, the less the better. This is a fact.
This is from an article on how turbos work.One cause of the inefficiency comes from the fact that the power to spin the turbine is not free. Having a turbine in the exhaust flow increases the restriction in the exhaust. This means that on the exhaust stroke, the engine has to push against a higher back-pressure. This subtracts a little bit of power from the cylinders that are firing at the same time.