I'd go as new as I could, just because of the wear & tear but new isn't always better!!
Just dont jump on the 1st one you find, unless you know for sure its to good to pass up, theres sooo many out there. Just check it out real good, you can usually tell if someone has taken pretty good care of it. If you go look at one and its dirty as hell, well pretty good odds thats one, that hasn't been well kept or appreciated.
Good Luck