Hi and WELCOME to the Forum JD!!!
Used should definitely be a consideration. There are some very fine used units out there that have been well cared for.
Find a reputable dealer from forum recommendations before shopping. Less confusing that way. Believe it, or not, the dealer is as important as the quality/condition of the unit you purchase.
Also, should a 5th wheel be your purchase decision, consider one that has a "Quadra Step" instead of the three step units. Much easier to maneuver in/out of the unit.
These can be added even after the purchase, if you end up with a used unit with three steps. Well worth the cost and short time it takes to install.
Here's a link to a post on this forum about the Quadra Steps:
http://bit.ly/HUPctx
Hope this helps some,