Geeze, of course Grow! is better than nothing. But eating bugs is better than nothing, too.
Why the resistance to Surge?
Surge is FAR FAR better than either Grow! for PWO. Classic Grow! would be a lot better than Low-Carb Grow! for PWO, but it's still far from optimal. The point is to get nutrients into your system as fast as possible. A slow-digesting protein is not going to do that.
Hell, I'd say just drink a whole bunch of chocolate milk if you can't afford Surge (and Surge isn't really all that expensive).
Once again, read some of David Barr's latest articles and the stuff by John Berardi if you haven't done so already.
Do you need Surge or your muscles will deflate? No. But it's so vastly better than plain old whey, that I'm not sure why you're making such a big deal out of looking for alternatives.