Am I too late to state my opinion? Well, too bad. I'm saying it anyway. xD
I actually think that Dark Pulse is better over Night Daze.
Night Daze is 85 Power and 95 Accuracy, however Dark Pulse is 80 Power and 100 Accuracy.
You'll guarantee yourself a hit, as well as a very similar power hit to Night Daze.
Also Night Daze only lowers the opponent's accuracy, whilst Dark Pulse makes it flinch sometimes. It's a very tough decision, but quite frankly I'm all in it for Dark Pulse, mostly because of it's loyalty to me (never heard of Night Daze until now xD) and that flinching can make things SO much easier.
And, as for obvious reasons that I think don't need to be explained, Flamethrower FTW. Lol.