Hopefully I'ts ok to ask such a question but I'm on the verge of getting a note 3 from clist so I was wondering if someone ca assist me on what to look for and avoid as far as current roms. I wanna ensure the previous user didn't take the update that would lock me down, so to speak, but I'm not sure of the past and or current build to avoid. Any help would be greatly appreciated.
Some stuff to consider is what root method can be used, depending on the firmware installed... and whether or not you care if the knox flag has been set. The latter will likely only apply if you have enterprise security concerns... which is unlikely if you're buying the phone on craigslist.
As for the root method... There is no unrootable version of the Verizon phone, since the kit kat update has not been officially pushed. Find the "Universal Root De La Vega" thread for which versions are supported by that method. You may have to use Kingo or vRoot... but these methods have had a sketchy past, so proceed with them only if you understand what they are (and more importantly... what they are NOT).
Ideally... you would want to find a Note 3 with the MI9 firmware version on it (the initial release), and it would already be rooted via the original root de la vega method. That setup worked great for me in getting onto the leaked, pre-rooted kitkat build.
Consider checking Swappa, too. You can get more information without having to hassle the craigslist sellers, who, as I have found out first-hand... are often surprisingly unwilling or unable to answer questions about their own devices that they are selling. Also... in one case, a seller was selling 100 pain pills and a Note 3 that they "found" and did not want to split the two to sell separately. Weird, huh?
Good luck!