Very similar.All the #'s mean are different pheno types. NL#5 is known to be the strongest(Most potent)of the NL's.But all are easy to grow and are killer indica.Flowering time is a little long but 10 weeks isn't that long.
You might want to try super silver haze...about the same flowering time but stronger sativa/indica hybrid(NL#5 x Haze x Sk#1)Some are (Haze x NL#5) x (Haze x SK#1)