Ok, someone needs to post here, so i'll do all the talking.
I don't know about the Cortech suit, and I've never owned exactly this fieldsheer suit, but I have a fieldsheer jacket and fieldsheer pants, and have the following to say:
They fit very well, are comfortable, and the armour seems well placed for me.
The build quality is total crap. Zippers ripped off within days of owning both, lots of seams fell apart, random flaps tore off with almost no force.
They're not waterproof although they were marketed as such.
I still wear the pants though, since I have trouble finding armoured pants that fit me, I'm 6'3 and very thin. They have no front zipper anymore but it doesn't really matter; there's a velcro thing there and the one remaining waist cinch keeps them up. I always wear them over jeans anyway.