Do you mean Surge Recovery or Surge Workout Fuel? Metabolic Drive low carb or muscle growth?
Either way, assuming your overall nutrition is fine, I would suggest investing more in peri-workout, so go with Surge. At least that's the way I approach things - control your budget, make sure you eat right and enough day in and day out, then pump the rest of your food budget into peri-workout.
Metabolic Drive, as good as it is, is essentially just a good protein source, so I would imagine the difference between it and regular whey will not be as great as between, say, Surge Workout Fuel and plain dextrose during training.