I have the Razer Orbweaver, the previous version, and I love it. I have mine hooked up to a 15ft USB extension cable and I have had no issues.
I don't use the d-pad for movement, I still use the WASD. I never took the time to get used to the thumbpad for movement. For the thumbpad I map it to the 1-4 keys so I can switch through weapons quickly.
I also use Rewasd, which is a key mapper software, instead of Razer software to map the keys. It's easier to use and has way more functionality and I also use it for my controller remapping. The downside is it's not free but worth the $30 for all the features. The best feature of it though is I can group the orbweaver with my Logitech G502 mouse and use one of the mouse buttons to toggle to a different button profile on the orbweaver. When I press that button now my thumbpad is 5-9 keys so I can quickly switch between weapons and my WASD keys are mapped to other keys while I have the button pressed down, it's a very versatile solution. You can also do this grouping with the Razer software but you have to use a Razer mouse for that function to work. For Rewasd any mouse brand will work.
I do game on my couch primarily so I also have a Rewasd Windows profile for my Elite 2 so I can navigate windows pretty easily as long as I'm not having to type. In my browser I use Bookmarks for my sites so I can easily navigate through my websites so much quicker than a mouse/keyboard. If you go that route I can share my profiles with you.
I just bought the Vader 3 Pro controller which Rewasd supports so I can use Gyro feature when I press down the left trigger which works great on games that allow you to use mouse and controller at the same time.