What is the best solution for an enterprise-level storage environment?

I would recommend Pure Storage FlashArray/XL for the enterprise level,it is relatable and high performance storage.

SAN - Best in class for price/performance: IBM Flash system. The new IBM FS5200 offers amazing performance, a 5:1 compression ratio (without performance penalties), and a very competitive price

For object storage - IBM Cloud Object Storage.

On top of that, you can put IBM Spectrum Scale - it is a multi-protocol, high-performance, highly available, clustered file system and associated management software. IBM Spectrum Scale can scale in several dimensions, including performance (bandwidth and IOPS), capacity, and the number of nodes (instances) that can mount the file system. IBM Spectrum Scale addresses the capacity and performance requirements to support modern scale-out applications such as AI/ML/DL with multi-cloud support.

NetApp

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NetApp AFF/FAS (or OEM Lenovo DM series), with no doubt, is the best answer. 

SVM provides total customer isolation; it's able to run FC/iSCSI/NVMe SAN. CIFS/NFS NAS, object S3 from one box. 

It's able to scale up and out. It is possible to combine All-Flash and Hybrid models in one scale-out cluster. Not supported to combine Lenovo and Netapp models in one cluster. 

-Ontap Select for VMware ESX or KVM

-Able to run on all the big 3 cloud hyperscalers. 

Search for data fabric strategy.