Clarify is great. I have seen them ship more updates in the last 15 months or so of using the product than any other CRM that I've ever used. The product is solid. They don't have a lot of noise/distraction, and are focused on building things that matter.
Note: below it says that "I didn't use this for work" but that's because I have to pick a company that I've launched on ProductHunt. I used this tool for my app, Holscher Analytics.