For size comparison, krait is ambidextrous and m8000x is right handed.

Shape, M8000X would be taller.

Size, M8000X will be slightly larger than krait.

i owned Gigabyte M8000 and Gigabyte M8000X, seriously these 2 mouse lack of quality, the mouse coating peeling after 3 month of usage, M8000 mouse wheel died after 1 month of usage, and M8000X firmware failure with button 1, left click function rendered useless everywhere, i bind macro the left button function to every key and it doesn't work.

Gigabyte mouse disappoints me the most.
G700, it is one of the best mouse i use so far.

Previous mouse i have used are, MX510, MX518, Roccat Kone, Razer deathadder, Gigabyte M8000, Gigabyte M8000X, Logitech G9, Sidewinder X 5

For best bang for bucks, i think G700 is the best if you compare in terms of price. for comfort is it also one of the best and easy to clean mouse compare to other mouse. plus the mouse is actually RM250 below.

wireless response are very responsive, they are instant. and there's no delay. i was quite surprise at first, because i brought the mouse because of the feature it offers me, buttons and mouse pooling rate, average-heavy weight mouse, and MACRO!, Not Wireless, because i am consider it is a plus, since wireless gaming grade mouse are expensive RM300+ above(sidewinder X8, and Razer Mamba) But i soon found out that i use wireless more frequently than wired.(i only use wired for charging and using at the same time, when it is full, i will use wireless back.)

Sanded surface provides better gripping and feels comfortable as well, thou starting when i saw the mouse, i was worry with the comfort issue, but to my surprise, the surface was really comfortable and easy to clean if you wanted to compare to Gigabyte gaming mouse series that have rubber grip with hole.

i personally hated rubber grip with holes because you can't clean them easily because all the skin waste will all stuck into the hole and requires you to use toothpick to clean one per one, esspecilly, there's about 80 holes to let you poke every each of them.

G700 doesn't have any cons, but you are picky, then i should have say first, the mouse have 2 things that might annoy you. one is the stiff cable, be aware that the cable(not braided) is much more thicker than other conventional mouse that you purchase. Second is Battery Life span varies upon what setting you choose for the mouse, they will last longer if DPI and pooling rate lower. so don't complain about low battery lifespan when you set everything to max such as 5000+ dpi and 1000mhz pooling rate. they could still last you a day or 2.

3rd is extra, the extra button is actually very very very useful once you learn to use them, these button are very well positioned and convenient to use, once you get used to the buttons and such. so consider them as extra. but they are very handy to use.

And Final, i pay for the mouse and i love it. and would like to get 2nd for traveling usage, i have recommended a lot of my friends, and they all brought it and love the mouse. you can ask one of them, username : Kahjye .
yes, i think the price is very good, for comment, see above.
G700 FTW! 
thanks for mentioning me 

thou i don't really recommend razer, maybe because i'm a razer hater ever since their product disappoints me couple of times. = =
Refer above for comments about G700