Best as far as nutrition or taste? I think Ispoure is pretty good as far as protein and carbs go... zero carbs and quite a bit of protein...but, for taste I like the ISS Research Whey protein in vanilla! They are all pretty much the same in my opinion....
As far as where to get them - do they have GNC's in NJ? I am guessing they would - if they do, then they would have them for sure. Also, a large fitness facility with a pro-shop would have them as well.....
I use Isopure Dutch Chocolate I LOVE IT really convienent because I don't need to mix it.... you can get it at GNC.
I also am usuing Adipo I do not feel jittery at all gives me a nice boost.
I also use Adipo, but i stack it with Guggulbolic...i really like it, the only weird thing i get is some chills running up the back of my neck, but other than that, it's great. I have been on it for about a week and a half and i really notice a difference.
Its very convenient to be able to walk into GNC & pick up stuff, though if you get in the habit of consuming this stuff on a regular basis, it can get $$$$. (GNC ain't cheep!) You might keep an eye out for any local discount nutrition centers or consider ordering from online vendors when you find the flavor you like!
I personally like Isopure & CrossPro. These are good quality protein mixes, low to zero carb and also mix well with water. I found after awhile I just couldn't stand the taste of any of them so I have to keep rotating on a regular basis....