Other than convenience there is no benefit to buying kits. Plenty great recipes out there and even if you like a certain “kit” you can put it together yourself and save coin. If you do order kits and want to change it up order some extra hops or yeast and experiment. Save the parts you don’t use and find or better yet make a recipe from them.
I’ve done the Wil Wheaton’s Vandal Eyes PA, Kama Citra, Permafrost India White, Jamil’s Evil Twin and the T-Can and Bearcat’s Wheaten Beatdown and all of them were excellent. Also, sometimes the kits are slightly cheaper than if you bought all of the ingredients separately. I’ve especially found this to be the case with kits that use a lot of hops.
Another vote for Dead Ringer. Just bottled my latest batch a few weeks ago.
I’ve also done a Pliny the Elder clone (the MoreBeer kit, not the NB one) and it was really good too. Yeah, technically it’s a double IPA, but it’s good. The kits are very similar as far as ingredients, so I would suspect the NB version is just as good or better.