Well... your best bet other than cost would probably be a Z1 FR with it's HCSV damping. I use a DJ3 for jumping and urban on a hardtail, but it would never make a good trail fork (hence I have a Z1 for that). You may be able to pick one up that isn't too used or possible some prices will come down with the new model year comming out. Check universalcycles and larry at mt. high, as they seem to have some good fork prices. [email protected]
may be able to work something out if you go to him for wheels, and he will probably help you out with shipping too.
Look for used Z1s, 03 or 04 would be great. The older 01/02s are good forks, just not as burly as the new models. I would really try to get a HCSV fork rather than the SSV/F forks from marzocchi... although those are solid forks, the damping is just sub par. Also look at the upcomming Stance line from Manitou. Do not go with the 04 DJ forks from Marzocchi. They have steel stanctions, are 4in travel and have steel steerers. They are great, just not what you want.
For drops and jumping the SSV/F will work fine... for trail ridding/dh look for the HCSV. Where are you? Southern California (where I am) has lots of fast DH with rock gardens and high speed stutter bumps... these really show the downside of SSV/F forks...
Consider used stuff... make sure you know what you are buying though... but that is how I got into freeriding, and did just fine with the used stuff I got.