I have been looking to buy a small suv. Specifically, the BMW x3, Infinity fx35, Audi Q7 and the Acura RDX. Let me know any feedback on them that you may have from personal experience.

The RDX isn't really all that great. It is ugly. But besides that, it is underpowered, only tows around 3000 pounds (falls about 3000 pounds short of it's competition) the engine fails frequently according to consumers, and did I say it was ugly?
I'd recommend the Infiniti FX. it has a nice amount of power, great towing capacity, beautiful looks, nice fuel eficiency, and unlike the RDX, doesn't look like a Rhino.

I'd also recommend 4 other small SUV's:

A Cadillac SRX:
http://www.cadillac.com/cadillacjsp/model/gallery.jsp?model=srx&year=2008&id=2&primary=3

A Lexus RX:
http://www.lexus.com/models/RX/

A Mercedes-Benz ML 350:
http://www.mbusa.com/models/main.do?modelCode=ML350

Lastly (and the best pick, too) A Saab 9.7.X:
http://www.saabusa.com/saabjsp/97x/?cmp=fov_97x

Good Luck.