I agree with Medialuna, many of the group classes will not teach the fundementals, how to walk, how to lead, how to deal with a follower who does not get what you have led, how to deal with different music. The list goes on, most will just teach you moves. Sorry I cannot help more as I did most of my learning in Europe. I took some privates with Jorge Garcia here, too advanced I think. I also have a friend out in Villa Lugano who will come local. We took many lessons with him in the early 2000s. I do not know what he charges now but if you pm me I can send you his details. You will need good castillano, it took me three years to get him to a say Mirror.