important thing to remember is that nitrous adds SERIOUS cyclinder pressure, just like a turbo does.
in fact, i have seen it, and if you're a frequent track junkie, you will too. n20 will often beat a turbo. that's because the extra oxygen is the "fuel" the engine needs to make power while the nitrogen cools the intake charge, effectively making it more dense.
n20 and a turbo are a great combo. however, a properly sized turbo and the right engine management like aem with its launch, traction and boost control, will get you better 60 foot times than anything else in this post.
ever seen a seriously fast car at the strip go bbrrrmp, brrmp, brmp and shut down at mid track while clocking a mid 9? the race is decided at the light first and the next 60 feet second.
antilag and launch control from something like an aem or fic will let you launch with as much boost as you want and from there it's all driver skill.
running boost on top of n20 requires not only careful tuning, but a good engine built.
if you just want to go really fast in a straight line, put a 200 shot with management on with a sleeved block and forged pistons, and you'll kill the turbo guys (up to about 500whp).
was that only $0.02 worth? guess i'm in leftfield somewhere.