I just bought a RL, Premium model with Navigation system. I looked hard at BMW 5 series and Mercedes E320 as well as the Lexus LS400. I found the big Acura to have no real weaknesses. It was larger, more plush and with more features than the German models. Plus, it doesn't come with the snob label attached.
It seemed the equal of the Lexus (other than the V8 vs the V6) and was thousands less. Plus, there are LS400s
I have had it for about a month and am very happy with it. Power is smooth, interior very comfortable and the sound system is incredible. This car doesn't necessarily demand attention, but it has understated class and refinement.
Put cd changer in dash! Have driver seat move along with steering wheel when key turns off to make it easier to enter and exit.
Also, autodimming rearview mirror should be standard. Gosh, my American SUV has that!
Cabin air filters are too hard to get to.