I'd suggest a GN no matter the type of trailer you get, they pull Sooooo much nicer than a BP trailer and the heavier the load the bigger the GN advantage is.
Actually a gooseneck is out. According to my owners manual GM does not recommend that my model truck be outfitted with any sort of 5th wheel hitch. My guess is that it's probably something to do with the shorter (5.8 foot instead of a normal 6.5 foot) bed.
It seems like there's more equipment trailers available used, so I may end up going with an equipment trailer if I can find a nice used one at a great price. If I do go new though, I'm strongly leaning towards the car hauler. Even if I hauled the tractor every week, the distances that I'm looking to travel are so short that I just don't see the trailer getting beat up all that much. Thanks to all for your input, and by all means please continue to add your advice, as I'm a definite newb in this area.