I have pulled a rented FAST, really nice bar.  I bought a BluJet AT3000 8 or 9 years ago.  15r/11r coulter injection, 1000 gallon tank, John Blue ground drive pump.  It was a lot cheaper than a FAST at the time.  I have very good parts and service available from Brokaw Supply in Fort Dodge, Iowa.  It is very heavy on the tongue when folded for transport and loaded.  Have pulled it with CIH 9230 and 8920, and IH 3588.

Edit: Have sidedressed without duals on the 3588, but the duals make it much more stable.  The 8920 has 14.9 - 46 duals, 9230 always has the duals on.