Broker/ISO question

I primarily broker real estate loans, but am getting more and more requests for revenue based funding and looking to expand those offerings.

I've signed up with a couple of aggregators like ROK, Lexington, etc.

What are other's opinions on going direct to funders or utilizing companies like those above?

I've sent a couple of deals through them and find the follow up and responsiveness, specifically with me, to be lacking. But that has just been my experience. Understanding, that I'm not a high volume producer for them as well. High volume producers likely have a direct line. 😀

Just looking for opinions as I navigate through this!