Maybe my point was not clear. When you buy a MB or BMW there are intangibles that you pay for. (i.e. free demo, customer service). Most if not all intangibles cannot be quantified, therefore, you have a premium. Your point on whether you get a demo or a rental car. If you took an RL in for service you would rather drive a rental car (most likely a grand am or something) instead of a comparable demo (TL/RL)? There's no value to that?
I know the TL-S is compared to 330 in all the magazines, but you have to admit it is far less superior.