I skydive in North Carolina's Triangle Skydiving Center. Now, it happens to be visiting family in Buenos Aires and to kill boredom, I visited this dropzone.
I did three jumps on April 8, 2012 on a 182 and had a lot of fun. Very, very nice/friendly people and awesome view of the town next to a lake. A dropzone will be growing a lot in the coming years.
Rating: I gave 5 points because I think it's an awesome place to skydive in Bs.As: it woundn't be fair to compare this or any other against some of the US dropzone. Everything has to be analyzed in a relative view.