So i recently just got 6300 and want to buy a new champ which one is best for solo que? My main choices that i like the most is Elise, Zac, Volibear, Jarvan, Riven, Nasus, and Zed. If i can get feedback on which one to buy that would be great! - Thanks

Rumble

Depends what role you play.

Volibear and Jarvan great choices for jungling.
Riven and Nasus are great tops.

or if you want a champion that can play many positions, Zed and Elise can go top, mid or jungle.

ahri

Mainly looking for Top/Jungle

Rumble has the highest win rate for top atm.
Naut is a really strong jungler with high win rates.
Jarvan is pretty strong and popular (usually as a jungler). One of the most played champs. About 50% win rate.

Just because a champion has a high win rate, it doesn't mean they're your best choice. Kayle can be top, jungle (what you're looking for), mid, and bot...they can be played as a duelist/fighter, support, tank, or a combination with different builds so she's really versatile.

for a good top i would recommend grabbing irelia, just total beast mode on everything that moves.

out of those ones provided I'd cross out jarvan, volibear and zac for solo que. The rest are pretty self reliable. If you are going for a solo que champion that you can somewhat carry with I'd say grab Elise, Riven or Zed. You may be able to do so with Nasus, but with the recent nerf to what made him so good top I don't know where he stands.

Riven, Volibear, and Nautilus are good choices.