What CRM are you using to manage your sales pipeline?

I'm curious for those in wine/ spirit B2B sales (distributor, supplier, etc), what is the best CRM you are using to track your prospects, clients, pipeline, email lists, marketing etc?

I would like to streamline my sales process (I'm the Sommelier/ Director of Fine wine for a distributor that services Casinos, fine dining, chain/ retail etc). 

My biggest challenge is managing prospects/ clients and knowing where they are in the sales process, following up etc. Would love to know what CRM/ process is working for you!