with a good turbo setup these days there is next to no lag unless you get into huge turbo's and im saying huge t88's and ****. i had a 50 trim srt-4 and that didn't even take much to spool, i was in full boost by 3 grand. In my opinion turbo's are better if you are going for big power because it is easier to get more power out of a turbo than a charger, and for the most part turbo kits make more power than a supercharger kit along with torque, it all depends on what you want and a big factor what your price range is, turbo kits are quite a bit more for the most part, tuning is more complex with turbo also, if i had the money to blow on my z i would go twin turbo all day, they spool very fast and make big power, with better stronger rods and a twin turbo kit i could put down over 600whp all day long safely on stock block, and i am saying well over 600whp, but thats not my plans for the z just want some more power for tooling around. i mean i drive the thing to work everyday, which is a 40 minute trip one way. And with almost double the power will run good enough for my dd.