Hey,
it all depends on what you want to do with it.
Do you want Fibre Channel or iSCSI? What bandwidth?
How many hosts do you want to connect?
How much Storage do you need?
How much IOPS do you need?
How much redundancy do you need?
How much money can you spend?
These are some basic questions that most sales consultant will ask you. Based on this they can make you offers from different vendors.
Regards
Tim