I bought this after driving an 2008 Infiniti EX35, and I totally regret the purchase.
The good thing is it's a bit cheaper on the 36 month lease, but performance is unwieldy and I'm not happy with the interior build quality.
Nothing in particular stands out.
Again, coming from an Infiniti EX35, the technology on the RDX is somewhat dated and unimpressive.
Some improvements have already been made on the 2013 version.
The turbo 4 cylinder is a terrible engine.
No torque in low rpms and then the turbo kicks in wildly causing annoying understeer.
Keyless ignition was also added for 2013.
I hadn't used an actual key in 6 years before I bought the 2012.