I do not like the Audix F-90's anymore. I want the Senny's too.
We're having that clipping issue.

Nothing wrong with the mics you have the wrong board and people contrling them.
Any pre-amps?
hmmmm.... fix the cause... the solution is fine fo the price. A good engineer would make it do what it do.
If you really want to make it happen get a coule ribbon mics... but again they will be just as limited if the knowledge and skillset and proper accessories equipent is not in place. Master the gadgts you have first before trying to upgrade. That way you won't create a expensive lesson for yourself.