Cazza, I fed Ronald and Hooch on Gusto for a long long time and have fed Mikey and Herbie on it in he past when I was pregnant and couldn't face raw meat. All of my dogs have done very well on it, better than on Autarky. It is very very cheap and I guess that's why many people stay away from it and it is also not as well known but my dogs enjoy Gusto. We call it Gutso
, and I get it in our local cow mills, it was costing for a 10kg or 15kg (can't remember for sure what size) bag for Ronald (senior) about £4.50 a bag.
I have yet to hear anything bad about it and from my experience it's been pretty good - Ronald did live until he was 15
.