Whey Protein or Muscle Milk ?

I've been running for past 35 years now and got into half and full marathons for about 6 years now. I've not taken any food supplement so far but now planning to try a protein supplement. This will allow me to build lean muscle and also help in better and quicker recovery after a workout.

There are plenty of choices in the market but the two main ones I'm considering are: 100% Whey protein and Muscle Milk. There are several articles highlighting the difference between the two:

• User reviews of Whey Protein and Muscle Milk
• More reviews at Amazon: Whey Protein and Muscle Milk
• Biochem Whey Protein vs Cytosport Muscle Milk
• How to compare Muscle Milk to Whey Protein
• Muscle Milk vs Whey Protein
• Difference between Muscle Milk & Whey Protein
• Whey Protein vs Muscle Milk ?
• Cytosport Whey Isolate Protein or Muscle Milk ?

I think I'll go for Whey Protein because:

1. Easier to digest
2. Low calories, carbohydrates, saturated fat per serving
3. More grams of protein per serving
4. Vanilla flavor works for me
5. Don't need to build muscle mass, prefer lean muscle
6. Prefer to have a meal instead of a substitute

Cons

1. Has more sodium so will have to adjust my diet accordingly
2. Clump/clot in milk or water, needs more dissolving time

What do you use for building lean muscle and post-workout recovery ?