How did you find your current T?
My wife's T referred me.

Did you have to go to several before you found a good match?
Hell yes.

How long does it take to realize they are (or aren't) a good match?
I gave up on one T after three months.
I gave up on one group after a year.

In your opinion, what qualities are important for a T to have?
To challenge a patient without driving him away is a delicate balance. My current T is at the upper limit of what I can stand. She nearly lost me on several occasions.
The T I gave up on didn't challenge me enough.
The group I gave up on challenged me too much.

In my experience, Ts do not alter their challenge seetings to match the patient. So if your T challenges too much or too little, you might as well leave.