[Britster]

There is no best food. And if there was one, I certainly wouldn't say TOTW was it.

I don't like SD, either, but I'm no professional. If I had to feed an RX diet to keep my pup alive, I'd do it... but it wouldn't be my first choice at all.

So basically it sounds like she has acid reflux, is a picky eater, has environmental and possible food allergies, has LP, Leggs Parthes and has a heart problem? I know you've already seen the vets and specialists, but I think I'd be asking their opinions first. If you don't agree with their opinions, maybe it's time to check out a new vet. How bad is the LP? The legg perthes? What kind of heart problem?

It's too difficult to really recommend a specific food for all of her problems. If she's not doing well on the SD, it's basically up to you if you want to do trial & error. If you'd rather, Royal Canin has some RX diets that I prefer over SD (again, unprofessional opinion).

Some "simple" foods with a bit less "noise" going on would be California Natural, Natural Balance, etc... both have one protein foods with limited ingredients. I think Nature's Variety also has an LID line. Acana also has a new Singles line.

But it sounds like your girl has a lot of issues to deal with and I don't know if I'd be doing stuff without some professional advising you.