Never tried the Felix sticks, but Pearl goes absolutely bonkers for the Webbox ones.
However, there are four flavours of the Webbox ones; turkey, salmon, chicken & liver and beef & rabbit. Of the four flavours, the turkey ones got the paws down early on, so I don't buy them. The salmon ones are reasonably popular, but the chicken ones and beef ones are by far the favourites.
Dunno what flavour ones you got Helen, but there's a definite order of preference here.