Well, Nitro's lines may changE next year...
Terp, who thinks you should know many think Diamondback is superior to Nitro, others vice versa...and Terp...he doesn't answer that conundrum...for anybody!
Currently I have DB as my 4th fav just ahead of Nitro-but both are very close in my opinion.
As to lines, yesterday the queues for DB were full in the morning, pretty much empty in the afternoon and filled again in the evening. It was a very hot day and the water rides and the water park tend to be crowded on those days.