The only mice I liked as palm grip were the old Steelseries Ikaris. I think Mionix has a shape that is pretty close to that one. Palm grip aint for me though. I claw even EC2 mice etc.
This new logi seems to be a contender. Idc about the led, but well, turn it of if annoying and thats it. 5gr more wont ruin the mouse so long as its close to, maybe a little under 90gr.