R.P.
I have used the Crest Whitestrips at home a few times. I believe that I used the premium ones. They work really good and I have gotten compliments on my white teeth several times. I am not sure how much your teeth need whitening. Mine were not that bad before using, they just needed an extra boost. My husband has used them and had success as well. His teeth needed the whitening more than mine.
I did speak with my dental hygentist about over the counter products before trying and that's what she recommended. This was a few years ago though so I am not sure how good other products are.
I have a slight problem using the products for whitening though because I have a sensitivity to the chemicals used in them. I even have problems with toothpastes. I can only use them once a day for a day or so and have to stop for a few days.
If you decide to use the Crest Whitestrips look out for sales. I have gotten them for 33% off at local drug stores and used a $7 coupon that you can get from coupon section of Sunday paper.
Good Luck!!!