I agree with everyone, Greene is the choice. However, i disagree with the assessment that Forestt is the short-term guy and Greene is long-term. Seattle just might draft a RB with one of their two first-round draft picks. There are also rumors that new Seahawk HC Pete Carroll might make a play for his ex-USC hero Reggie Bush if the Saints cut him rather than pay $8 million in salary to Bush in 2010.
And while we speculate about players getting cut, remember that Thomas Jones will be 32 when next season starts, and that the Jets will have to pay him a $3 million bonus in March, or have to cut him. Jones will make $2.8 million in salary in 2010. If the Jets cut Jones they will save $5.9 million in cap space. (source: http://www.nyjetscap.com/thomasjones.html
All you have to do is look and see what Greene has done for the Jets the past two playoff games to see that Jones is expendable.
So, Greene could be the right-now guy and Forsett could be in a RBBC next year.
Either way Greene is the guy to keep. The Jets traded up in the 3rd round of the 2009 NFL Draft and they couldn't believe he was there. They have a great young offensive line and a run-heavy offense. Greene's immediate future could see him with 20 TD's.
As a footnote, Homerjay mentioned Leon Washington as a problem for Greene. Little Leon broke his leg in two places and is a free agent. There's no guarantee Washington is back with the Jets either.