I use Hootsuite every day. I love that I can schedule my posts as far in advance as Id like. It is easy to use and makes running my online business a thousand times easier.
I currently have the free version, but there are a few things that could make this app better.
1) adding more social networks and allowing a personal FB page as well as a business FB page to be available to post to at the same time. (Currently Im only allowed to post to one or the other) Id like to see Pinterest & Tumblr as social networks to post on as well, and Im sure Im forgetting a lot of other sites.
2) I dont like how when I post to my 3 social networks (Instagram, FB page, & Twitter) I have to manually go in to Instagram and post it myself. All Hootsuite does is copy my post to my clipboard and then opens Instagram with the picture I had selected for my other pages. Granted having Hootsuite open Instagram with my picture and having my caption ready to be pasted is definitely a time saver, however it would be so much easier on me if I didnt have to give an OK and post on Instagram myself. Especially when you have 3, 4 sometimes 5 posts a day.