These feedbacks are much appreciated. For the reasons above I'm comfortable leaning toward JBL at this time. The value proposition with JBL appears strong to me.
Billy, I think you might be misreading a few things.
First, I'm not playing bass thru a piano or anything other than a real bass guitar.
Second, I would never play my bass thru a studio monitor or anything other than a bass amp, not even at "lower volume levels". Among other things, that would probably void the monitor warranty to begin with. I have a 500W RMS @ 4 ohms / 300W RMS @ 8 ohms chest rattling amp and smaller practice amps at the ready. For a couple years I was the bassist for a medium sized church where we bought two 2000 watt subs from Gloria Estafan's band that she outgrew. These units could push some serious air. Our sound man made sure things didn't get too out of hand

Third, I'm not interested in purchasing an interface; already have one.
Fourth, not interested in headphones, already have a good set (JBL by the way).
If I stated anything that misled you, I apologize.
Also, according to Sweetwater the ADAM A7X is no longer available.
"Sorry, the ADAM Audio A7X 7 inch Powered Studio Monitor is no longer available. We've left this page up for reference only. Check out the great alternatives on this page or call toll-free (800) 222-4700 to speak with a Sweetwater Sales Engineer about similar products."