What do you like best?
Easy to integrate with Optimizely.
Confetti helps to visualize clicks by segments - device, new/old visitors, campaigns, etc.
Low price (for small websites that need only simple heatmaps)
What do you dislike?
Limited visualizations - CrazyEgg doesn't offer attention maps or mouse movements like other services.
CrazyEggs offers only heat mapping, we prefer using less services to get more information (session replay, funnels, formas analytics, etc)
Recommendations to others considering the product
If you need to get simple heatmaps that's easy to integrate with Optimizely easily.
If you have a small budget and you don't need in-depth data analytics.
Otherwise, there is plenty of fish.
What business problems are you solving with the product? What benefits have you realized?
Mostly we used CrazyEggs due to its easy integration with Optimizely to get heatmaps from different variations while running A/B testing.
Those heatmaps were useful, however we really missed some other informations like mouse movements and attention maps.