No one does what Oktopost does. To have a single, flexible portal to manage multiple social accounts and quickly deploy messages is a godsend. I've used HootSuite and it's clear that Oktopost goes beyond a "Twitter-centric" social marketing approach. The conversion tracking (based on a successful landing page campaign) is also very valuable to demonstrate to management the importance of maintaining a social presence.
The UI is clunky and immature, particularly the bulk upload function which is super critical for a "low impact" management approach. Workflow is clunky as well.
I was looking to essentially schedule 2 weeks of updates at a time to back fill the occasional news items that happen ad hoc. This process is clumsily realized especially when it comes to uploading Twitter posts. You can do it all in Excel, but you have to constantly remember the strange rules around what characters are allowed (no Unicode or quotes), when to include descriptions and titles (always, even if the documentation says not), and Twitter messages have a completely different set of rules.
While the conversion data is important, it doesn't go far enough only telling you the location of the person converting, not the actual identities.
The social monitoring tools (i.e. comments and responses) is also clunky.
It's also kinda pricey.
Write down the workflow you need to maintain and do it religiously. Ignore the documentation.
I have been able to maintain an ongoing stream of content and it's great to associate posts with actual campaigns. No other tool does that. It's definitely B2B focused and that's critical.