My personal experience is that JIRA is an unmitigated UX design trainwreck. Most of the UI pages and workflows that I've seen are nightmarishly kludgey. It makes Bugzilla's UI seem decent by comparison.
I haven't used their other products (other than BitBucket, which is fine, but hasn't kept up with Github), but JIRA desperately needs a UX design vision.
We are working on re-working the JIRA UX right now and we would love your feedback. Shoot me an email at james@atlassian.com and I'll pass it along :-)
I haven't used their other products (other than BitBucket, which is fine, but hasn't kept up with Github), but JIRA desperately needs a UX design vision.