Suggest you have a look at Logitech G400 / G300.
You are palm grip or claw grip? Give it some more time, you will get use to it. 

Damn, that's a poisonous review there son. Feel like getting one for GW2

Its awkward at first, but once you get used to it (take me about 3 weeks time since I brought it last month) it work pretty well expect FPS which I still prefer the G9 or G700. Also I recommended using smooth less friction mousepad like for example the Razer Goliathus Speed Edition, before that I was using on my QCK which is quite hard to navigate.

Overall the G600 has far ahead better software (same goes to G300 and G400) than the previous logitech gaming mice including the G700 but ergonomics and trying to lifting the mice is quite unnatural/uncomfortable.

been using a G400 for a few months now since my 318 died.It's a great mouse is just that sometimes my pinky tend to get tired and lay down on my mousepad, and when i wanted to aim right it's in the way. palm grip here btw