Mechanical vs. electric fuel pump?

Hey guys,
went to fire up the scamp today and its ready to go except for the fact that my carter mechanical pump is toast (its an old one)...from a performance standpoint, what is better an electric or a mechanical? i am aware of the strengths and weaknesses of both- I am know that a mechanical will be easier to install, just stick it on and go, as opposed to an electric that has to be mounted and grounded, with a regulator, etc... The car is a street car first and foremost but at the same time i plan to take it to the strip and i do plan on adding more horsepower, quite possibly in the forum of nitrous...my dad keeps telling me go mechanical and avoid the work of an electric, but im thinking the electric is the way to go...there isnt much selection out there for smallblock mechanical pumps that are high performance, atleast not that ive seen....

so what do you guys think? id appreciate any and all opinions on this....id like to decide by monday so i can go ahead and order my pump on tuesday after thanksgiving for us canadians and have it come in to get it on and fire up the car

thanks!
Matthew