I've had good luck with Dell precision workstations for business work, but they will put you above your budget. They used to use enterprise components (its been a while since I bought one). I've had power supplies and disk drives die and Dell will overnight you an exchange. I've had power surges come in over ethernet and Dell has replaced memory and motherboards overnight. If you are using this in your business, it needs to be rock solid with mirrored drives and you need to do backups daily. I used to backup my data twice a day because losing 8 hours of work was too costly. Accidents and power surges are real things that happen to good people.