With the VIP rank, you'll get:

[VIP] exclusive /tag
7x /sethome (up from default of 3)

/Nickname (colours/formats/magic)
/Workbench

With the MVP rank, you'll get:

[MVP] exclusive /tag
15x /sethome (up from default of 3)
/Feed (5 minute cooldown).
/Anvil
/Enderchest

Plus these from VIP:
[VIP] exclusive /tag
/Nickname (colours/formats/magic)
/Workbench

This is an UPGRADE. You must own VIP to purchase it.

With the MVP rank, you'll get:

[MVP] exclusive /tag
15x /sethome (up from default of 3)
/Feed (5 minute cooldown).
/Anvil
/Enderchest

Plus these from VIP:
[VIP] exclusive /tag
/Nickname (colours/formats/magic)
/Workbench