If you actually need a lot of buttons on your mouse, then my recommendations would be:
- Logitech G502: not the biggest amount of buttons but by far the best sensor compared to the usual "MMO mice"
- Logitech G602: still not a full MMO mouse, but a good sensor and amazing battery life for a wireless mouse
- Logitech G600 or Razer Naga: the standard MMO mice with num-pads. If you can try them out just pick the one that fits your hand better
- Corsair M95 or Roccat Tyon: MMO mice with a bit different layouts