Day at the Spa

I have been searching for some great day spas here in Knoxville. I was wondering of anyone knew of any nice places I can try. I have it narrowed down so far to two places, Oasis and European Body Works. I am leaning towards Euro just because the reviews I fins are more in favor of them. I am not looking for a quick massage or just the ones that last a couple of hours. I am looking for a complete day of pampering!!!! I am also looking to stay around less than $300. I would love any feedback! I will post my experience the spa of my choice later on. Thanks!!!