The Naturade weight gain is good stuff and it has lots of different amino acids in it, too. Other stuff I've tried:
Prosure- not bad, 300 calories + protein
Nutren- 1.0, 1.5, 2.0- tolerable, barely
Suplimed- Nasty, medicinal. Couldn't handle it, wasted $$
Naturade also makes a protein supplement powder-nasty, not tolerable, more wasted $$