So if you are not a dev it's going to seem confusing but all of them are up to date - there is just more then one way. You are asking the wrong question really? It's more of a do I need a 3rd party automation platform.....and the answer is most likely yes unless you know API's and can do it all inside of GHL. (Which no one does btw) You still need to be on V2 - regardless if you make a marketplace app or not.