For example, if you need extra memory to be able to run a specific software package essential to your business, a computer shop can not only sell you the product, but install the memory and your software, and ensure that everything operates properly before you ever pick the computer up. That's something you won't get from the teenager wearing a blue smock in the electronics department of some superstore. While working with a company that can help when trouble arises is important, avoiding trouble makes a lot of sense, too. All brands of computers are subject to problems from time to time, but some are definitely better than other at avoiding them. Speak to someone who has extensive experience with many brands of PCs, and you'll soon learn that there are a few with very poor reputations.
Reliability can even vary within a single manufacturer's product line.
Business-class models, on the other hand, will typically be covered for a full three years. It's quite obvious which models the manufacturers consider more reliable. It can be difficult these days to keep up with the newest technology as it arrives on the market. Fortunately, it's not always necessary. There are definite benefits to purchasing the fastest, most powerful technology on the market, but most business settings require a lot less than what's riding the cutting edge of technology.