What Class would best mix magic with sword

A Sorcerer with a sword or a Nightblade for sneak in a spell with blades?

I'd say Nightblade but this is a TES game so really it shouldn't matter much

This question is like asking which is better, Blue or Red?

I would go Sorcerer, but that's because its my usual MO

Seeing as how its an TES game, probably anything

I doubt you will find anyone using a sword without magic.
But you will probably find many people using magic without a sword.
But as far as your question goes... if it makes you feel good do it.

I would say best would be NightBlade or BattleMage.

Now it depends what schools of magic you want and after reading and listening to a lot of leaked info, not saying its true just saying it was leaked info, now as a sorcerer the three magic types are: dark magic, deadric summoning and storm calling. Dark magic is basically lots of AoE spells and have quite a few passives and their last spell on the tree is an AoE spell that pushes everyone around you a few meters and ties them to the ground for 15secs, summoning is summoning, you summon imps etc and their final is this tower of awesomeness that deals tons of damage. It's a storm atronach that stands still for 15 secs but does massive damage. Finally storm calling is massive buffs you give yourself, I don't have much info really. N

Nightblade has little info on it but I assume this is more of an illusionary magic tree and alteration/mysticism type magic trees. Hope this helped.