I've tasted a few different U Brew products and frankly I brew much better. They use extract malts, warm fermentation (I don't think they brew at lager temps, but I'll accept admonishment if they do) using probably Mauri yeast and filter their beers. Its good enough for the market they attract but any genuine home brewer probably wouldn't bother. If you are a simple K & K brewer its not too bad as the beer should be better than what you can do at home (assuming the sanitation, constant temps and filter) but not much. You can't fiddle too much. The bloke running the setup bought a franchise to make beer, but I doubt he's a brewer, in the same way that the kid who makes burgers at McDonalds is not a chef.
Don't automatically deride the notion of these complexs, just remember that the market they cater for (almost exclusively) are not at this site. If out of their customers someone comes over to our side of brewing, all the better. I know that some posters here operate such franchises and they would support my comments here. The day they allow you to do extensive changes to the brew in terms of wort ingredients and yeasts and cool temperature control may see more homebrewers go across and use their facilities to brew rather than make a mess at home.
Edit : Don't listen to Q's complaint, I think it's a bit over the top. A poor beer is a poor beer, but to make you sick it must have been infected. If it was infected, you'd taste it and not drink it. It could just as easily been poor bottle cleanliness and some kind of food poisoning. I doubt Q's and his mates experience had much to do with the general output of these places.
Hazz, if interested, give it a try. The only way to correctly assess value and performance is to stick your money down and taste the end result.