We used Jaki for our BWV resale purchase. I wouldn't hestitate to use any of the 3 big resale brokers but Jaki was the one that I had the resale contract I needed at the time.
I was impressed that she contacted me at all hours with different contacts that came available that met my needs. I think one we passed on, one the seller passed, and 3rd one - bingo!!
Exactly what we wanted, a BWV contract loaded with banked points, with current and future points intact, it even had the same UY as our other resale contract.
It seemed like that she never was off the clock. She called me at home 9ish at night because that was when both DH & I were at home to make decisions. Then she would call the seller and then call us back.
After the deal was done, her son (forgot his name) actually handled all our paperwork because Jaki was away on a well deserved vacation.
If I had to buy another resale, I would call all the major brokers and let them know exactly what I was looking for with as much detail as possible as to what I would be willing to buy or not and what can be flexible . I think it helps to let them know that you are serious and not "just looking." I would buy from the first one the had the contract that I wanted.
Many brokers will call those buyers on their list with the offer before it ever makes it to the website. I have a feeling that the bettter or "juicier" resales usually get snatched up by a buyer on a list before most people even know about it.
Good luck.