I dunno, I'm torn between the PP IBL render and the Vue renders, both unpostworked. Malls tend to reflect more light and nearly never have dark areas - well except maybe Hot Topic but that's a different story.

Again it's all about your setup and understanding light setup. I think that IBL and radiosity are supplements to good lighting, not replacements. A stuntman will be a much better driver with a jalopy than a teenager driving a Porsche.