Someday maybe the performance of a single volume (or concat meta) will be the same as multiple volumes (striped meta)  For now, multiple volumes can outperform a single volume.   Striped VP metas can be expanded, but today it requires a thick BCV on 5875.  Easier to expand a concat meta. 
Being said "Before configuring stripe metadevices, please consult with an EMC performance specialist." EMC recommends using concatenated rather than striped metadevices with Virtual Provisioning. I have gone through various discussion in this forum. My client is strict to make stripe meta only in virtual provisioning. My understanding, only frame will hit high I/O while writing in stripe meta, and as well reading. (triple striping!)  Is there any performance issue reported in storage system while using stripe meta with virtual provisioning ever?  And, When to contact EMC for advice to make stripe meta in Virtual provisioning?
concat/stripe meta in virtual privisioning