We like Pipedrive's overall structure (in particular for the way it looks a bit like a Trello board) a lot for the types of sales we do (multi $k/month deals).

The interface is kind of slow and laggy which for something that our sales team spends all day in, is very annoying... For our purposes we can probably live with it but if we were really sweating call volume then I think we'd get something snappier.

We looked at a lot of alternatives and I was blown away by how un-blown-away I was by anything we looked at.