Syntrax's Isomatrix is a good all around blend.
Myoplex Deluxe is a MRP though, so if you're looking for something to replace that you could try Cytosport's Muscle Milk. It has awesome flavors.
I don't know where you shop, but here are my recommendations as far as online retailers go:
www.1fast400.com
www.dpsnutrition.net