I'm at around 5500 IP, and I'm thinking of either saving up for Viktor/Xerath, or buy Xin Zhao now. Which one should I buy? is Xin worth buying, if i don't want to build him like a tanky DPS but instead, as a "machinegun"? If Xin ain't worth it, I need to know whether to buy Viktor or Xerath first, as they both interest me. Which would suit my playstyle better?
As for mages, I mainly play:
Malzahar (A semi durable mage, Abyssal Scepter and Rylai mostly are enough. Farm and push early on, focus on killing later)
Veigar (Full-on AP. All focus on last hitting with Q early on, unless the enemy is too aggressive/easy to harass.)
Karthus (Focus mainly on last hitting, harass enemy and ult when needed. Farm all the time at late game, unless we are planning a push or something like that)
Fiddlesticks (Jungling, and ganking as often as I profitably can. Fiddle sucks at farming so I give very little focus on that, and instead focus on getting as much kills as possible)
And occasionally some other non-traditional mages such as:
Warwick (Hextech Gunblade, WotA, Spirit Visage, Rabadon, Lichbane) (Play very aggressive early on, keep harassing with Q, use R + Ignite + Q combo when enemy is near death)
Alistar (3 Doran's Rings for starters, then Abyssal Scepter, Rylai, Rabadon, Zhonyas) (Headbutt to zone and harass the enemy all day long. If the enemy slams into a wall, Pulverize and beat them up with passive + autoattacks. Level up Pulverize only once, max headbutt first and focus on the heal second.)
Singed (rush Catalyst, then Hextech revolver, then build 3 Rods of Ages) (Farm most of the time and if the enemy gets too close, fling them. I play extremely troll-like as Singed, focusing on pissing the enemy off as much as possible. Bait and make them follow me whenever possible, and heal trough Revolver.)
Nunu (Build similar to Singed) (Toss icebergs at the enemy, heal when needed. If the enemy is hugging tower at low hp, dive in when my minions arrive, use Ultimate, and then kill the enemy.)
Mordekaiser (rush Hextech Revolver and Haunting Guise + Sorc Boots, then get some tanky AP stuff like Rylai and Abyssal Scepter) (Focus on using Creeping Death on minions to farm up and keep my shield up. If my enemy is aggressive, I play passively and Q their face in if they come close. If they are more passive, farm, farm and farm.)
So which mage would suit me better, any suggestions? I doubt Xin is good as a glass cannon, but I don't like tanky DPS:es very much.