De iss with light

Hello everyone. I want to ask you something.

Im pretty close to hit 85, and a friend of mine told me that the dark elf iss enchanter have a pretty nice p.evasion. (wo buff or gear)

So, we talk about beging using a light armor set instead of a heavy set (for the immortal one). not only for the +evasion, but I see that the light mastery give me the +2str and a bonus of +25% of mp regen and more atk spd.

So:
Heavy with more pdef/max hp but less atkspd/p.evas.
Or Light with more patakspd/pevasion/mpregen but less pdef/max hp?

What do you think about?

100% heavy.
No way to use light even if it gives you +10 Evasion.

Iss on Heavy have nearly the same Pdef as a tanker.

Evasion setups are bad for any char outside of rogue/archer. Evasion itself is not rly reliable on the biggest evasion chars to begin with, so it's worthless to try trade evasion for p def and crit dmg reduction. Also atk speed diference is barely noticable.

Heavy, the pdef is much better for being in the middle of mobs.

Oh well thx for the answers, I will consider that.