I like this scale:
http://www.yorkietalk.com/forums/yor...od-rating.html
As you can see, NB LID Duck & Potato still scores very well!
Van Patten's Duck and Potato / Score 106 A+
Note: You could use the scale and rate the other LID if you are using another formula.
If you wanted to feed her the higher scoring ultra premium formula, it comes in small breed bites too! However, it is not grain free.
Van Patten's Natural Balance Ultra Premium / Score 122 A+
I still say though, if she likes the NB LID then you can safely continue feeding it to her no problem. It really is a great food!

Like I said, Rylie has no food allergies and I keep her on the LID. There are various reasons for that, but she has no problems being on the LID.