title says it all i would like to know whether it is better to get graves or kog. since i have the ip to get either one and dont think ill be getting syndra.

i seem to shut down kog pretty hard whenever i go ADC with varus but then everytime i find im going against graves we get royally facerolled due to his stupidly good dueling ability.

Not to sound harsh, but I'm going to tell you what I always tell these sorts of posts and that is...

PLAY THE FREEKING CHAMPIONS

All in all the champion that you'll like more is going to depend on your tastes as a player, if you'd like a rundown on the two champs here you go...

Graves is the closest thing to a fighter you're going to get in a ranged carry...

-Stupidly tanky for a carry...
-Crazy burst damage (Through Quickdraw and Buckshot)
-Decent Kiting
-Solid damage scaling (He's a carry, duhh)

Kog maw on the other hand is quite a bit different, he requires some feed (And some skill to get it) but once he gets fed... it's GG...

-A little tricky to learn and play
-Excellent Kiting
-Stupidly strong damage Scaling (Has wicky nasty tank-busting potential)
-More sustained damage than burst damage, but it can be delived at a very long range.

More people should post to help you out, I'm not a super avid ADC player, so more helpful tips will come I'm sure. Go ahead and see if you can grab one of these guys to try out, and see who you really want to buy. GLHF, and ask any other questions you have...

If you have a friend who plays nunu alot or if you just do alot of premades in general, Kog'Maw is a solid buy. As long as you have teammates who are willing to jump in front of you and peel for you, Kog'Maw can single handedly drag teams to victory if sufficiently farmed thanks to his insane late game damage.

If you solo Q a ton you can't really go wrong with graves.

THAT BEING SAID:

If you solo Q alot but still want to play a long ranged hypercarry, Tristana is better than Kog.

If you are going to be one of those derps who play Graves and constantly buckshot from max range instead of getting stuck in, don't play graves.

Kog needs a smart team around him to excel. Graves is more self-sufficient.

Both do good damage. Technically late game kog does more sustain damage, graves does more burst