We purchased the EX35 new in May, 2008, so we've had it for nearly 6 years with 71,000 miles. In that time, we have had nominal repairs: 1. Broke the power mirror joystick, 2. Replaced fuel pump based on a Technical Service Bulletin and 3. Replaced a visor vanity mirror. Maintenance has been pretty simple - just followed the major / minor service schedule - oil changes at 7.5k and major services at 30k and 60k miles. My rear brakes required replacement at 45k miles and my front brakes required replacement at 70k miles. I changed the battery after 5 years. The original Michelin tires required replacement at 60k miles (replaced with Yokohama tires from America's Tire / Discount Tire)
The Infiniti EX35 is essentially an Infiniti G37 hatchback riding on higher profile tires. Although, Infiniti markets it as an SUV, it is among the most car like of the SUVs we drove. The EX35 shares many of the driving and handling characteristics with the G37, such as quick acceleration and taut handling. Since the EX does ride higher than the G37 and also has higher profile tires, there is significantly more body lean than in the G37 sedan. However, body lean is significantly less than other CUVs (or most mainstream sedans). Given the car is rear wheel drive, it handles better than many of the front drive CUVs or cars. It still maintains decent weight distribution and the car feels like it moves around you. The closest cars I have found to the EX35 are the BMW X1 and X3.
The EX35 drives like a luxury CUV. The ride is smooth for such a sporting car and is relatively quiet. It handles pot holes fairly well, with minimal body crash or sharp returns.
The interior styling of the car is "classy". High quality materials are used throughout. The seats are comfortable. The dashboard is a study in simplicity - the gauges are bright, simple and legible. The radio and iPod integration are exemplary - very intuitive. If you know how to use your iPod, then the iPod integration is a no brainer. HVAC controls are also straightforward and use established paradigms for operation.