What project management systems do you use and why?

The question with the choice of a project management system was ripe again. At this time, we use @task .

Quite a powerful system, but not so good as we would like.

Not satisfied (by priority):
- high cost (30 bucks / month for one user);
- there are no contextual branches of tasks that are activated by the conditions “if the conv. performed, then we work on this thread);
- usability (rather messy interface);
- there is really no project financial management system;
- Slow work.
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Like:
- project templates
- gant (true buggy)
- excellent data presentation flexibility (filters, views, reports)

Hence the question, who uses what and what can he advise?