What do you like best?
FBX has generally been most useful working between platforms in a mixed team, smooths out pipeline, takes out a lot of guesswork. Free tools integral to quick feedback, streamlines engine importation, it's an essential industry-wide standard format. Assuming familiarity with the format it's a no-brains approach for data importation.
What do you dislike?
While translation between suites is fairly uniform, static mesh almost always comes through properly, a lot of associations, materials, normals, data may not be quite as intuitive. You need to be mindful of your importation settings or risk wonky normals etc. I would say there needs to be a better cross-platform translation, though being aware of how files import isn't game-breaking, and in light of the complexity and variation between platforms in the first place, this is fairly minimal.
Recommendations to others considering the product
Essential if working with 3d suites and between engines. Free tools make conversion super simple if you find yourself stuck with a weird format. Very accessible.
What business problems are you solving with the product? What benefits have you realized?
Running models through two or three different applications, having a universal format and lightweight tools is really useful for quick critiques, feedback, or fixes, review especially useful when mobile. Having a format that will reliably import is priceless.