Actually, if you have a MBP LED, any of those are fine, fine, fine for the next few years. The biggest update will be in a year plus...as in theory, Intel is so successful with their .45, that it is said, in theory, they could place 4 to 8 cores on one die. This will be the plus.
Also expect the new MBP to offer 20% increase (FPU/CPU) while giving as much as 2-3 extra hours of life. Also, when the flash drives become larger, we will see mere seconds to boot, and excellent for AUDIO SAMPLE work.
I just hope they keep the form factor the same so existing macbook users can upgrade.
Still, its quite upsetting that Apple (at least according to the new Macworld Rumors), there is STILL NO SUB $1000 machine with GOOD graphics, enough of this intel crap. Apple even crippled the latest macbook X300.
After Leopard, the macbooks rendered OpenGL from 150 (Xbench) to 170, then, after X300, it dropped to 85%, how pathetic. What are they afraid of? That the PROS will buy cheap machines for AUDIO/VIDEO? SPARE ME, the PRO user now makes up very little of Apples marketshare. Its all moms, strollers, crying kids and puppies in the stores. Have you seen it? Geesh, hardly anyone knows the Pro apps. Hope they get back to the core base someday.
Am happy that the 30" rip off is being replace by a $1200 30". Its about time.