What do you like best?
This product has saved so much time and effort. It is solid and seems to have little or no impact on the running of our applications. The interface is clean and easy to use, and there are many monitoring options that cover everything we need. The fairly new log archive viewer has also been very helpful.
What do you dislike?
In our case, we have many instances and servers, and the licensing can seem a bit expensive, especially for developer licenses.
What problems are you solving with the product? What benefits have you realized?
We use FusionReactor primarily for monitoring. When applications have problems we can see exactly what is running or what was running. Being able to go from requests right down to database queries, object calls, and web service calls, we get a good picture of all requests. We also use it to monitor memory usage.