Pitfalls of buying off-the-shelf

Many times clients ask me which  new computer I recommend.  Almost invariably I recommend a custom built (aka bespoke) computer but am anxious to point out that not only do I not benefit by selling such computers myself, but I expect to get less income from maintenance and repair work as a result of someone heeding my advice.  This is perhaps contrary to initial thoughts, so here I list my reasons for giving such advice.  Note that I am including any mass produced computer in the phrase 'off-the-shelf' whether from a brick and mortar shop, catalogue or web site (even those with self configuration options).

The amount of time and therefore cost needed to prepare a new PC for use is a little greater for an off-the-shelf model. This because bloatware has to be identified and removed and recovery CDs should be created.