Wet manifold systems, for example TBI, Carb, etc all suck. Your fuel tends to pool in the manifold.
CPI sucks too since it use fuel pressure to open the poppet nozzles. So all the nozzles basically open at the same time.

The only real advantage of TBI over carburaters is improved fuel metering.

But most of all you dont know exactly how much fuel is getting into each cylinder.

Port Fuel Injection is the absolute best way to go.