Throttle bodies give you better response,
Full throttle open gives the same power figure as a single throttle plate.

Depends what your using the car for and what management you going to use as you need an ECU with multimap capabilities to change from Map sensor site to TPS site.

Its harder to map multi throttle bodies with a turbo engine for various reasons, the main one is transition between vacume and boost.

It's also harder to have take offs for dump valves etc and serious anti lag is a bit of a mare if you go the jenvey route due to small idle port size.

Haven't got the time to explain at the moment, need more info

My Jenvey style inlet system on my Zetec flows alot more air than before using the Rover 220 set up. Highly recomended