Well, it's a personal opinion (and I haven't used Ghidra too much) so: The UI is a lot 90s/ish and a bit unconfortable to use, but it ships a great decompiler

Well, it's a personal opinion (and I haven't used Ghidra too much) so: The UI is a lot 90s/ish and a bit unconfortable to use, but it ships a great decompiler and it can render nice graphs, the quality of the generated listing is good, but inferior compared to IDA's one. And...Java...