Personally, I like the "on demand" aspect of nitrous.
Mine is 600 hp naturally aspirated and very mild. It runs and drives like a regular 440 with a small cam. Add a 250 shot and it comes alive!
It seems like power adders are poo-poo'd by the Mopar crowd for whatever reason. I've gotten more than a little blowback for running nitrous both on here and locally.
Personally, I do what I want with my car and whatever makes me happy.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.