Get 4 or 5 on2-ers together and ask them what's the "right" way to lead a spin prep... you'll find sub-sub-sub-divisions ;-)(I have only just learned these exist lol who would have thought that salsa had subsections let alone their subsections having subsections!!!!!!)
There is really huge difference in On2 dance styles. Here is two examples, one is from Santo Rico Social and other from probably very early hours of St. Petersburg salsa congress (first pair in the video).
New York City (Santo Rico Social)
http://www.youtube.com/watch?v=LLasXKeguzY
St. Petersburg (Salsa Congress early hours ) (first pair in the video)
http://www.youtube.com/watch?v=Z6LSijYCmXo
Both couples dance very well even though there skill differences at least to my eyes. But that is not the point.
Interesting between these videos, there is really huge difference in style. New York example is civilized social dancing, using pretty "big" preps and dancing by the book, couples keeps distance and does not really interpret music that much.
In St. Petersburg salsa congress example you can almost smell sweat and adrenaline. Pair dances very close together and hits accents very well. Dancers have excellent body rhythm and leading moves are kept pretty small. There is also big difference in the role of the lady.