Re: Buying new verses Used
The advantages of new is that you have a warrantee, and it is highly unlikely there have been any undocumented modifications.
The downside is that 1) not all warrantees are lived up to as well as you might expect, 2) nowadays, the chances of getting a new unit with serious problems is uncomfortably high, 3) The depreciation over the first few years is killer, 4) the price for a particular level of quality and features is the highest.
The advantages of used (after a complete and competent inspection, of course) is that 1) The odds of factory defects is much less, 2) someone else is eating the depreciation, 3) the cost for a given level of quality and features is significantly less.
The downside of used is 1) you often don't know how it was treated or maintained, so the odds of excessive wear and/or undocumented modifications is greater, 2) there is no, or limited warrantee, so if there are problems, you are on your own, and 3) some of the life of the unit has already been lived.
For me, I prefer used, but I will admit to buying new on occasion when the deal was too good to pass up (always on a last years model so far).