my opinion is that there are only a few likely organizations that make sense for lebron, that is if he wasn't bullshitting when he said he only cares about winning championships. they would basically have to meet the following criteria:

1) legacy - lebron is likely cognicent of this moreso than any other superstar in the past 10-15 years. either he does what MJ did and builds cleveland into the a dynasty or he pursues that legacy elsewhere in the form of a big media market with deep pockets. viable options here - cleveland, new york, miami, chicago and los angeles. boston is out because they don't have the cap space. chicago can make space for lebron. miami will have the space and the room to possibly threaten building a team around not only james, but a resigned wade AND add bosh, too. new york and LA will, or can make, the space.

2) they have to be a piece or two from a championship. this takes knicks out of the equation because they are years away from being competitive. even if they cleared enough to sign both bosh and james, that likely wouldn't enough to get the job done. if miami can get james, bosh and wade all under one roof, they might as well hand them the trophy a la 08 boston. chicago makes sense only if they find that missing dominant low post player (as they have been for the past 3 years). otherwise the situation in chicago is really no different than what he's got in cleveland. the clippers aren't even a consideration as long as sterling owns the team. the lakers could shop a lot of their young talent to make space for james and a nucleus of bryant, james and gasol easily delivers 3-4 titles in short order. i dunno how feasible it is that kobe and james play together but they suppossedly get along and so long as james becomes a man possessed like kobe, there'd be no stopping them. problem is, james has yet to prove he's a killer like kobe or mj. he has his moments, no doubt, but night in and night out he is not the force that either of those guys are / were. not yet anyway.

but what do i know, i'm no expert. i would love for james to come to chicago obviously and threaten the crown that MJ wears. but if that doesn't happen i hope he just stays in cleveland and builds that franchise up and retires a cav the same as the bird and magic did and jordan should have done.