Sounds like you want to work with a vendor who can advise you on a hardware purchase based on your anticipated workload, like Dell or CDW. Know your workload though before you call, e.g. how much disk space you need, how large your databases and what percentage of the data is used on a regular basis so you can scope the amount of memory you want, etc.
There are no special teachers of virtue, because virtue is taught by the whole community.
--Plato