i agree that far and few from HF are good but this DA is defiantly one of the good ones. friends have had great luck, pros have had great luck, ametuers have had great luck. a TON of positive reviews out there and proven to last.
again the DA is one of the very few GREAT tools from HF that is well worth it. BUT if the OP has PC its not really an upgrade it has more power than the PC but not enough of a difference to replace a good working PC.