It's interesting to read reviews from those who traded "down" from a European brand. I did the same, and my monthly lease payment is $120 lower than the Mercedes C300 AWD Sport I traded in. My family actually prefers the Acura for a lot of reasons... the only things I miss are the 6-cylinder refinement and the Mercedes bank vault build quality.
I was tired of getting 17.5 mpg on premium gas around town with my 2009 Acura TL. I looked at BMW, Mercedes and Audi. However, I just couldn't justify the extra money. Everything cost EXTRA. I went back to Acura and they had a Milano Red Limited Edition loaded TSX on the showroom floor. I immediately fell in love with the looks and bought it on the spot. To me it is the most agressive looking Acura with the body kit. It just looks sexy and strong. Although I am giving up a lot of power vs. the TL, I am also getting about 6 miles a gallon farther down the road. In addition, I hardly ever found a time when I could 'drive' the TL agressively. At this point, I am not missing it much.
I traded in an aging BMW X5 with a V8 that I loved but couldn't handle the expensive repairs any longer. The TSX with technology package is roughly $12-$15k less than a similarly equipped BMW, Audi, Mercedes and also $5-10k less than a similarly equipped Infiniti or Lexus. I've been very pleased on the value the car offers for the price, but it definitely does not drive "German". The 4 cylinder noise is not pleasing the ear, but it does offer decent power and economy. The safety ratings are excellent, the sound system is very good, it has lots of standard equipment (xenons, leather, sunroof, bluetooth), and is a very solidly built car. I am happy with my purchase...but I still miss my BMW :)
I've probably have had 20 new cars and that many used in my life but can't say I've liked any more than this. Love the size, the quality in and out, sound system, handling, gas mileage 25-35. Have had it about 6 months and 6,000 miles-no issues.
I wanted a good sounding engine, reliability, and refinement as the three dominating factors in that order. I was sick and tired of hearing a nasty exhaust, the constant problems, and lack of refinement that my inherited 04 explorer had. This Acura is better in every way except cargo/seating capacity that I never needed. It is especially fun to drive; it begs you to drive it hard. The deep, refined growl of the engine is priceless, though the effervescent purring of the I4 would have satisfied me. Handling is excellent, but the ride is quite stiffer than a Lexus, and it is louder at high speeds. At least you won't fall asleep! Not a great city commuter, but very fun for highway/mountainous.