"Consultants" who *SELL* PCs ???
Good grief. A CONSULTANT, such as myself, does not play around with off-the-shelf, single-PSU workstations (i.e., PCs) within the business.
That said, if your client asks for a recommendation on non-critical "end-user" machines: More than anything else, it depends on the number of machines. For an "Enterprise" using Windoze, 3-year lease agreements (with site licensing and next day hardware replacement), from Dell, is an attractive recommendation. But, if you're making a recommendation for a small number of computers, then it's best to specify a big-label box -- but STRONGLY, STRONGLY suggest replacement of the el-cheapo PSU's which they come with -- and recommend RAID. Always!
90% of the time, case cooling is also insufficient, and easy to upgrade. STRONGLY, STRONGLY recommend a big, quiet, fan. It takes about 2 minutes.
($20 PSU's with wide swings in voltage AND "flutter" as well, eat motherboards. The cheap motherboards are prone to fail, and the "cheapest per terrabyte" disks WILL NOT!! be Caviar Black. But nearly all computer hardware failures start from the PSU, or from excessive heat.
DO make specific model recommendations. And of course, because you're replacing a couple of parts, be absolutely sure that the model you're recommending doesn't have one of those "warranty void if removed" stickers.
