I'd like to buy a new Mac Mini. I will max out the RAM to 4GB, and I don't care about the extra hard drive space. So the only difference that matters to me would be the shared VRAM. I will hook my mac mini up to a HDTV to watch HD video, including some 1080p M2TS video, which for some reason my first gen. 15" low-end MBP (2GB RAM, ATi x1600 with 128MB dedicated VRAM) has trouble playing. Is the $599 version capable of playing those movies? Will the extra 128MB (shared) VRAM in the $799 version bring substantial improvements in this field?