This gamepad is an ergonomically left-handed design, 10 button with throttle and directional thumbpad, that allows for FULL macro ability powerhouse!...This is a Hunter's DREAM!

Check this badboy out:
Belkin Nostromo N50 Site

I suggest going to your local Computer Store and see if they have these in stock, they've had sales on these recently and they can be bought for $19.99!!!

Here's a few examples of what I have setup...

Button 10: Shift-1, 7, 4, 3, 3
This macro switches whatever quickbar i'm in to my main, then hits the number 7(which I have setup with a macro to /face), then 4(Crit Shot), then 3 (auto-shoot), then 3 again (auto-shoot and reload)

Button 1: F7, G
This macro hits F7 (target loot on ground), then hits G (grab item and put in inventory)

Button 7: Shift-1, 7, 3, 3, 3
Hits Shift-1 to switch to main quickbar, then number 7 (/face), then 3 (to nock normal shot), 3 again (auto-shoot), 3 again (auto-shoot and reload)

Button 6: Shift-1, 5, 1
Switch to main, then number 5 (swap weapon to spear), then number 1 (spear style)

Note:
The Nostromo also allows you to set the delay between keystrokes, I use .3 seconds...Any less and lag could cause the system to not get the response, anymore and it's not useful.