I'm in the large group of people who can't jailbreak/unlock because when on 3.1.2 awhile back, it crashed and i was forced to update. Is it worth the $5 to be put on a dev account and update? I mean i hear stories already about not being able to downgrade and lack of wifi... but it still sounds much better than 3.1.3. Also, if put on a dev account, will I be eligible for all future updates to the beta 4.0? ....right now i am thinking about waiting for beta 2 to convert to 4.0, but this is off blind, rational knowledge.