We have some customers that are wholesale customers, which we currently use Wholesale - All In One, but we also want to have subscriptions for wholesale customers as well as non-wholesale customers. We also want to have bulk discounts for non-wholesale customers that could single purchase or subscribe to a bulk purchase.
I have played with a few apps, but none really work well together.
I have played with a few apps myself, you can check this app out https://apps.shopify.com/sapp-subscriptions It has the option to set discounts for subscribers and offers much flexibility on subscription options. It is pretty new on the app store and not yet rated but I would highly recommend it.