Opinions on maxing Q or E on Nasus?

Lately I have been playing E Max Nasus, I start x2 for the sustain. I take Grasp and sorcery secondary so i can get manaflow.

What I've noticed:

Pros:

• No real difficult Match-ups since you can farm from distance with E and not be in any danger.
• Really easy to farm, often out CSing my opponent by 20-30 CS early on and even more later into the game.
• Late game you are still Late Game Nasus
• With proper Mana control you never really have to leave lane
• No one can freeze the lane against you
• Very difficult to dive since he can clear any minions almost instantly

Cons:

• Almost 0 kill pressure
• Even though you can farm from safety, E has a fairly long CD and mobile champs can engage without any risk
• If you get camped, you can't push with E and are basically useless
• Damage is very low unless they fight in the E
• You don't hit a mid-game powerspike even with Sheen, your spike isn't until actual late game (30 min+)
• Team thinks you are trolling

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So what are your opinions on this and do you find maxing Q to be more successful? Prefer people who have a lot of games on Nasus, but open discussion is open.

Im going to start playing Q Nasus and just see how they compare.

BONUS: What is your opinion on AP Nasus?

EDIT: From what I can tell, the main difference between Q Nasus and E Nasus is when they are strong and when they are weak. Late game obviously both are strong, Q Nasus has the stacks (350+) whereas E Nasus has way more CS and mediocre Q stacks (~250). Mid-game Q Nasus is capable of dueling, E Nasus is not. Early Game E Nasus is way stronger and has almost no bad match-ups while Q Nasus struggles against lane bullies and people freezing the lane.