When to buy Merc Treads on AP Casters?

[quote=M580]Been running into this dilemma alot on some of the champions I go mid with (Nidalee, Swain, Morg). I know most AP carries opt for sorc shoes, but at what point do merc treads become the better option? For instance I was laning against Morgana as Swain today with an Amumu in the jungle. With that kinda CC, is that enough to make the merc treads more worth it? It's made tougher by the fact that merc treads are more expensive. So just looking for advice, when do you buy merc treads as an AP mid?[/quote]

[quote=Legendarsreign]Personally, I opt to buy other boots like [[Mercury's Treads]] when the other Team is going AP/CC heavy, like 3-4 AP/CC THEN I would grab them personally... If your having difficulty mid, just hug the tower when you notice mia's or if they have a jungler just be weary if mid laxes off and starts trying to bait you out. Pay attention to your mini-map and Ward the side bushes, it can save your life ;)[/quote]

[quote=Joobieo#41288]Enemy team has heavy dmg and a lot of CC go for merc treads. Just make sure your gaining your magic pen in other items.[/quote]

[quote=Zeprido]Enemy team has a lot of CC and the extra 25 MR would be useful due to majority of enemy team consisting of magic damage champions.[/quote]

[quote=Seelyon]I will get them occasionally if they have a tonne of cc (direct lane opponent and jungler specificly) and im having trouble with their magic damage. I always compensate with an abyssal/void staff though.[/quote]

[quote=mastajdog]specifically? when i'm getting hie with enough cc that i can't function well.[/quote]

[quote=abzilla]As AP I almost never go for merc treads. Just be careful and don't get caught by their cc. Usually if they catch you you're fucked anyways, so might as well deal more damage and try to out play them You're not meant for punishment, and if you're doing the [[swain]] thing and can't cast spells then what's the point of mercs. So, to sum it up: Outplay > Merc Treads[/quote]

[quote=Blydden]My rule of thumb for Ranged Attack Damage Carries is that there are three or more [i]spammable[/i] stuns/blinds on the enemy team. This is easily translated into the Ability Power Carry, when there are three (if a caster assassin like [[Ahri]], [[Akali]], [[Kassadin]] or a sustained damage caster like [[Cassiopeia]] or [[Soraka]]) or four (for burst casters like [[Lux]], [[LeBlanc]], [[Xerath]]) or more [i]spammable[/i] stuns/silences on the enemy team. That is when you should acquire your Tenacity.[/quote]