This is a very interesting discussion for me. I was unaware how advanced Carrara had become. I am reluctant to switch horses after investing heavily in Vue5i in money and time. However, I'm frustrated by several features in Vue5i that seriously limit my productivity: 1) The memory leak issue - I wouldn't accept a car that had a leak in the gas tank, would you? 2) The inability of Vue to distinguish between materials and material zones, which requires awkward, time-consuming workarounds. 3) The limited support for Poser imports. I'm tired of having to adjust the specularity of every Poser material because Vue can't be bothered to translate the Poser specularity settings into the Vue equivalents. As I work mostly with Poser figures, this is a big issue for me. (Just don't ask me to render in Poser!) Describing Vue as "overpriced shareware" is close to the mark - it's bugginess gives it a definite shareware feel, and doesn't match up to the price e-on charge for it.