I finally saved up to 6300ip and I don't know which ad carry to get. I own all but vayne, graves, kog, varus, and draven.

I almost always play with a premade team so which champ would I benefit the most from?

I say Graves, Kog, or Draven.

If you are playing with a premade that can protect you and you can get good with Kog, he is a True carry.

Graves saw the most play in MLG and is a strong pick always.

Draven is still new, but i think he has the skills to be one of the strongest carries in the Game. He has 3 different steroids that with alot of skill can always be up, and he has a very strong early laning phase.

it is up to you though

Graves is a very popular AD carry due to his ability to dominate the lane but I never enjoyed graves as much as Kog'maw.

I actually used one of my 'oops' refunds on graves since I never used him over kog'maw, ashe or tristana.

It is personal preference, if graves was not a good option he would not be used in almost every single game you can spectate. On those 5 games you can chose from on the main page at any given time graves is usually in at least 4 of the games.

Early/Mid= Graves
Late= Kog'Maw

If you're doing premades, learn some poke/protect the kog comps and go for that. Graves is probably better for solo queue

I've always enjoyed playing as Graves. I feel that it's much easier to get ahead of your opponent in lane early on. But, I have seen Kog'Maw being used pretty effectively as late. Especially since with Kog, you have that choice of playing either AP or AD and still roll on people for days.

Graves is the best in solo queue due to his dash steroid and reposition otherwise kog or corki; team specific