So you come on and talk about all the great stuff of the RS7 and nothing positive from your perspective about the TRX, seems like you are trying to talk yourself into the car but you know deep down the TRX is the more attractive, more versatile and more badass vehicle.
Second, you talk about the RS7 "smoking supercars Goliath". Sorry it just isnt smoking any modern supercar with a 3.2 0-60 and a 11.3 second quarter mile.
I will give my $.02. I bought a 4 year old 911 Turbo in 2013. It was absolutely loaded (Aero kit, ceramic brakes etc). Stickered at $162K in 2008 before tax. The car was fast, AWD, pulled like a freight train, stopped on a dime and cornered like it was on rails. Honestly it was also the most boring car to drive at anything less than 150mph (I actually owned it while I was stationed in Germany so it got a lot of autobahn time). The difference between the RS7 and the 997 Turbo Porsche...the Audi is just a plain jane boring ass sedan. It looks like every other 4 door sedan on the road. AMGs have a distinct muscular style, porsches have the wide hips....audi RS7s look like every other boring ass lexus or hyundai genesis out there.
No one is going to pull up next to you at a light and roll the window down and say nice car like the will with the TRX (I have had my TRX for 2 weeks and less than 200 miles and it has happened 8 times already, not that I am looking for that but it highlights that it is a different beast).
Can you beat a mustang or camaro stop light racing? Sure but so can the TRX. But neither can beat a real supercar (Lambo, McLaren, Porsche)...and for arguments sake, say it CAN beat a supercar. So can a lot of Honda civics out there.....
The question only you can answer is do you want to marry the boring, flat as a board straight laced girl that gets good grades or do you want to marry the smokin hot blond with curves in all the right places that makes you heart skip a beat when you see her from a distance or upclose. The RS7 will get lost on the sea of boring ass 4 door sedans in the parking lot...just like that flat as a board good girl.