B2b platforms for cultivators that people actually like

I do a lot of marketing consulting in ny for retailers and beginning to work with cultivators. What are the top b2b wholesale marketplaces people actually like? I hear a lot of complaints about Distru, Leaf link, Nabis, etc. Too pricey, bad customer service, poor results, etc. A lot of the cultivators are just direct marketing and selling to retailers. Retailers are just going to trade shoes to find suppliers. What actually works so I can recommend to my clients?