Intervals strengths / weaknesses?

We switched to Intervals from a combo of Copper and Basecamp. It is much more efficient and I think the interface is much cleaner and easier to use. Very intuitive. It also provides many more options for tracking project estimates versus actuals. I absolutely adore the reports it allows you to make. You can get information on employee productivity, project status, and dozens of other reports by just a few clicks. No need to mess with importing into excell and creating your own reports. The time sheets are also a strength for me, giving all the information I need on a single screen. The employees are responsible for maintaining their timesheets, but I have the option to review and approve or reject them if I spot any problems.

In sum, I'm very happy we switched.

The negatives for us are two things: the user permission levels are very broad. To give all our employees the permissions they need (to create/edit projects, to assign resources, to see projects they aren't directly working on, etc) we have had to make nearly all of them administrators. We're a small enough company that we don't worry about them fooling around with options they would not normally have access to, but this could be a problem for a bigger group, depending on how much access your employees need to have. I'd definitely play with this in your test period.

The other problem for us is that Deactivated Tasks can't be searched. If you want to find info from an old project, you have to know exactly what you're looking for and then un-deactivate it before you can see the Task details.

These two things are inconvenient for us and the way we use Intervals, though I think they are less problematic for other companies. For me, the benefits absolutely outweight the drawbacks, which we are at least able to find ways around.

All the best with your decision!