CONCERNING MAGNETIC LATCHES:
In my experience they create a WAY worse problem than they solve. Both my fiance and I have had CRACKED MacBooks due to the magnetic latches. They suck the top case down on top of the area with the trackpad and those little "plastic nubs" along the top of the screen hit hard and create cracks. You dont even have to close it hard for that to happen.
With the hook/button latches on the MBP (ever since the Pro line started) there is actually a bit of resistance on the way down to close it so it prevents the cases from slamming against each other.
For the love of God, use the hook latches or find a better system.