Sure.
As you mentioned, they're both supply arrangements, and both of them are eligible for use. They're mandatory tools. The distinction between the two is ultimately in how the deliverables are stated in the statement of work. For the task-based, that's very deliverables focused, so typically there's a lot of precision associated with the scope of work. In the solutions-based, you're identifying a problem. Therefore, the contractor has much more leeway in terms of how they deliver the solution but they are, ultimately, accountable for delivering the solution. That's the predominant difference between the two.