For all the back and forth on subs it seems to me that the most likely lacking quality of full range speakers lies in the inability to get the bass right. The cabinet and it's resonances, the crossover and it's intermodulation distortion, not to mention changes in frequency response that occur when the bottom end crossovers heat up, part of that IM distortion, are limiting factors in all but a very few speakers.
Congratulations on your choices, you probably have gotten max performance for the dollar. And there is a good deal of satisfaction in that.
One day perhaps I will add some subs but my initial setup,like yours purchased all at once, has my wife rolling her eyes when I begin to show signs of upgrade fever.