Which Logitech mouse for large hand/palm-grip?

[Tullphan]

I currently have a MX-1000 & is a fairly good size for my hand, but it's beginning to have issues.
I have a palm-grip & have somewhat large hands.
I don't game that much, but do occasionally.
I got a 50% off coupon for any mouse purchase from Logitech's online store.
Ideas? Suggestions?
Thanks.

 

[Almighty ODST]

G500