We've been going to Mill Creek Vet for a little under a year now, and really like it. It's not generally very busy, and we've never had to wait very long for an appointment. The staff there are also very polite, and Dr. Betts is great with our dog (who's always nervous to go in and get shots, etc.). They're more expensive than our previous vet, but charges seem reasonable, and some things make up for it, like great deals on flea medication. Generally, we've had all good experiences with Mill Creek, and plan to continue to use them for all of our veterinary needs.
Pros: Close to home (for us), no long waits
Cons: Not cheap