I have heard bad things about all of those foods. Wellness,chicken soup,even diamond are better. If weight is the problem I've always heard to cut down instead of changing diet completely.
And here is a great dog food site. the person that runs it is very helpfull
http://www.mordanna.com/dogfood/
And here is a great dog food site. the person that runs it is very helpfull
http://www.mordanna.com/dogfood/