NO I am wondering which of these is the best to use
Best to use for what?
🙂
If you're just talking about automated posting, then any of them work just fine. If you're talking about user interface, that's debatable. If you're talking about features at a lower cost, that's subjective.
For me, I use two of the tools on your list - Hootsuite and Buffer - but I use them for completely different purposes.
Hootsuite I use for scheduling posts on Twitter & Facebook. I also use it for posting articles or sites that I find interesting. I use Hootsuite for brand monitoring also.
Buffer I use only on Twitter, and usually this is for reposting articles that are in my feed. I have configured buffer to pull articles from places I follow, and then I can cross post those articles on a schedule.
Hootsuite has a similar feature, but the viewing of the article and then scheduling is easier for me on my phone in Buffer.
I also use Feedly to push articles that are in my feed, but that's not exactly a Social Media Management tool.
So, as Steve said, "for what" as it's relative to answer the question.