What treats do you recommend?

I usually buy Beggin Strips for my dogs but the ones I got for them yesterday made both throw up, I am considering switching to Holistic treats...they have already switched to high quality dry and canned food(TOTW)...but all the treats at my holistic store are expensive and weird flavors. I don't want to spend 10 dollars on a bag of treats that they won't eat. I do not mind spending the money, as long as they like them. Does anyone have any favorites?