Sure, if this is for reals I'll bite.
I went through three copperheads over a couple year period, now discontinued; the buttons gave out. Instead of a crisp click that worked anywhere on the button, it got 'soft' and unreliable. Old product, old news, hope you got whatever the issue was sorted on new units. I haven't had trouble with my current death adder.
I use a deathadder LH ergo now.
But as it is now, its still on your site if you search for it, but its not easy to find. If its not selling well, that might be part of it :(. It also doesn't look like you've made the successor the death adder chroma available in LH form factor. Too that's a shame; I'd buy one.
Beyond that: feedback:
Quite like it. Comfortable; but wish it had a a couple more usable buttons.
Only one of the 2 thumb buttons is really usable. I hold the mouse too far back to be able to reach the forward thumb button. I wonder if that's a common complaint?
And I'd LOVE to see the market research / focus group data etc that led you to have it default to the right mouse button being the "left click" *button 1"!!!
As someone who grew up in a world of universal and RH ergo mice, the left mouse button has always been the Left mouse click "button 1"...on every mouse ive ever laid a hand on; it seems absurd to me that any mouse would ship with them reversed by default; even on for LH users.
Sure I can swap them in the software, but its still annoying; since they'll be wrong in BIOS/UEFI, or if boot to safe mode, or with linux live CD, etc... maybe I'm the oddball who uses mouse left handed, who wants the left button on the mouse to be the left button click event but I truly find it hard to believe.
If the deathadder LH is on its way out that's a shame. I'd definitely be interested in an LH mamba or LH deathadder chroma than the Naga; I might try a Naga LH; but I can't imagine needing or wanting the thumbnumber pad. Maybe its one of those things you love once you try... but I haven't taken the plunge... and its bit much $$$ to just order online to find out. And I've never seen one open in store to play with.