I have a slightly more differentiated opinion from the gentlemen above.
First, yes, Jarvee is brilliant. It can do so many things that you might not even think of, and it does them well.
Socinator is more limited in functionality, but still 100x times more than you will ever need.
Where both are the same is user interface. They both are a catastrophy. Very long and steep learning curve.
You can see that tons of functionality have been added and added and added, and nobody seems to think about user process, user experience let alone design.
Where the two differ massively, is price. The more accounts you want to run, the more relatively expensive Jarvee gets. And don't forget that Jarvee's lowest price is only for 10 accounts in total, so if you have 3 Insta, 3 Facebook, 3 Twitter, 3 YouTube accounts, you already need to go for the 70$ per month package.
Socinator offers a single network price, too. So you might decide to use both bots, the smaller pack of Jarvee plus single variants of Socinator for mass accounts.
There's also a difference in scope. Jarvee still has the mostly defunct Google+ in its list, Socinator doesn't. But Socinator can also do Quora and Reddit, a huge plus for some...
Finally, about the customer service mentioned: I totally disagree with the members above me who complain about Socinator's customer service. They have a telegram channel, where you get some member of the team taking care of your problems immediately. However, due to the scope of the software, sometimes you need to wait a few hours until the specialist for say Quora comes online. But I've always found them very friendly and eager to help, even with stupid little "where is this feature" questions. And most of my wishes about functionality have quickly been integrated into new versions of the software.
So in short, both programs have their merits, and if you're an allround digital marketer like me you probably want to use both in parallel.
And those who only want to automate 10 or less Instagram accounts, you're far better off with a cloud bot like a Nextpost server.