Yellow Pansies. To me they are all executed well and the subject handled well. Not sure if the filaments in #1 are tack sharp, as this is the main focus point here. A shallower depth of field would have also resulted in even more isolation of this aspect.
You have handled the processing well especially considering that I find these saturated yellows in flowers quite difficult to get right. Its quite easy to under/over do this in processing.