Frost 4 set

[Npshaman]

Just been simming my gear for my frost mage and currently i have 3 upgrades in my bags, all 3 of which are about a 15-25% upgrade over items im already using, because of this im wondering whether the frost 4 set is worth keeping when i have to use an 875 item over a 900 items to get it.
Armour link is below

http://eu.battle.net/wow/en/characte...81rcana/simple

[Xinder]

Just been simming my gear for my frost mage and currently i have 3 upgrades in my bags, all 3 of which are about a 15-25% upgrade over items im already using, because of this im wondering whether the frost 4 set is worth keeping when i have to use an 875 item over a 900 items to get it.
Armour link is below

http://eu.battle.net/wow/en/characte...81rcana/simple

I feel like you've answered your own question. Also it may still be worth keeping the 2 pc bonus but if you still sim higher with the 3 900 ilvl items over having even a 2 pc bonus then go with that. Simming and figuring out your gear isn't an exact science but if you're seeing that big of an increase you should probably go with those items.