We needed to replace three slow computers at our business.  I spoke to an IT friend of mine and after learning what kinds of work and programs we ran, he suggested getting a factory renewed/refurbished.  I hadn't personally purchased a refurbished computer before but he said they were great and only suggests refurbished to clients, especially knowing there is a 90 warranty through Amazon.  Since you'll know if there are problems with the system within the first days of working with it, that sold me.  They may not be absolute top of the line and on the cutting edge of technology, but they were also only about 1/4 of the price of a new, middle of the road Dell.Though we've only been using them for a few days, these towers are very strong, fast and powerful.  I can have several internet browser windows, Quickbooks desktop version, spreadsheets, and documents open and they all perform exceptionally well.The only company support I've needed was in regards to shipping.  They originally showed a wide shipping window so I didn't know when they would be coming.  I wanted to have the computers changed over before the end of the year.  I contacted customer service through Amazon and asked for a tracking number.  It came the next day and showed the computers arriving within the next couple of days.If we run into problems with the towers or with the technical support from the company, I'll update this later.  But as of now, we are very satisfied with our purchase.