5/4 set is going to be better if you can afford/find the pieces you need. Which i know you can.
Then its all about what you want.
For example:
My mage wears 5 def / 4 hearty. Because i wanted the extra health and that is the pieces i had that fit.
Carlon wears soc suit.
The proof sets people don't really seem to save/use, but when you're hunting specific things its the stone cold nuts.
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Carlon

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Here's the deal I'm the best there is. Plain and simple.
I wake up in the morning and I piss excellence. ~ Ricky Bobby