With Vegas at least, I haven't seen anything that can really fine-tune the machine. Rather, it's about making sure your machine has no problems. I don't really see where BOXX would excel in that regard.

I've tested memory latency, memory bandwidth, overclocking, and faster hard drive speed on performance. Of those four, only overclocking makes any real difference (and in my book, it doesn't really count).

I'd be interested in whether or not fine-tuning really makes a difference. And what tweaks those would be, and whether or not BOXX implements those tweaks in their computers. It seems to me that they have a very high profit margin... the only real reason to pay for that margin is that presumably they have better support, or test their configurations to work with particular hardware.