[~Bellydancer~]

Jennifer,
I did some research on the two products. Biotene contains xylitol as a sweetener which has anticariogenic ( anti-cavity) properties. It appears to be more soothing and promotes to the tissue. I would advise it's use if you are using a commercially prepared mouth rinse. Pro-health mouth rinse has a lot of chemicals in it and it apparently has cause brown staining of the teeth. As a Dental Hygienist, this sound like Chlorhexadine staining, there is also evidence of Black Hairy tongue and loss of taste. Again that sounds like Chlorhexadine, which is ONLY recommended for short term use and usually after Periodontal Surgery as healing initiates.
I have found that I have had good results with baking soda and H2O to neutralize irritations and salt H2O rinses for the sore throat. I periodically use a Tea Tree based mouth rinse and have had no ill effects. If you floss daily and brush effectively with a soft brush for at least 2 min, there should be no worries about breath mal-odour or decay. I use a sonic brush, as I feel, professionally, that it cleans the best and is gentle on the tissue. Most oral irritations run their course in 7-10 days. If you are plagued but "canker sores" salt water is really the best, when used 3-5 time/day.
email if you need more info.