I'm not the OP, but the last fintech startup I worked at used the hosted version. It was slow (server and client side), a memory hog in the browser, every extra feature was more $$$.

It took a few weeks to get a suitable workflow set up, and in spite of my gripes it's one of the best issue trackers around. I miss working with it on other projects.

What I really want is a fast and lightweight Jira.