Not a very good choice for females because it does cause androgenic side effects. If you added Tbol to a test only cycle the advantage would be that you will be able to kickstart your cycle with the tbol. This means that the test takes a few weeks to build up to a effective dose. Well Tbol will start to work very quickly making good use of the first few weeks. Anavar is good at the end of a test cycle IMO because it can theoretically harden up some of the gains you made on test possibly making them easier to keep after cycle.