I personally use make offer, with a couple of BIN's on names I value highly - I did try BIN on all my names at various platforms but in my mind I probably overpriced some and under priced some.
With make offer at least you get a chance for negotiations to take place or take a higher priced offer than you were expecting....
It also depends on the quality of the names, low quality = no offers or very low offers
I personally have had offers that failed to convert through non payment and me trying to negotiate a better price
Try a mixture and put some reasonable BIN prices in there and see how you get on?