I was out driving on the weekend, and was listening to KUSC, to what seemed a very aggressive performance of Vivaldi's Four Seasons. Turned out to be the LA Phil at the Bowl (though I'm not sure if it was a live performance, could have been -- live as in "at that moment" as opposed to "recorded live"). My initial reaction to the sounds was that it was Il Giardino Armonico, as I like their performances.

Seems to me that the more aggressive approach to pieces of music is very prevalent these days. I don't know if that's a good thing or a bad thing.

Just an observation from someone who is in no way as studious of these matters as you are. I bow to your knowledge and perception.