You can find a comparison and review of the best diet programs at the consumer research site which is: http://www.consumersearch.com/weight-loss-programs
To get reviews on the Marriott Rewards Visa program, check out a site such as the official Marriott site. Or take a look on a site such as one called reviews, or another called businesstravel.
Some of the best diet books based on reviews are 'Burn the Fat, Feed the Muscle', 'The Diet Solution Program', and the more popular 'Dr. Atkins New Diet Revolution'.
Please visit the website www.dietprogramreviews.com. There you will find reviews for some of the most popular diet plans along with some of the lesser known plans.
You might want to try the reviews regarding HCG on Diet review(http://www.dietsinreview.com/diets/hcg-diet/). This site provides benefits and the danger of side effects of using HCG Diet. With this, I am also recommending http://hcgdropssideeffects.net for in this site, the PRO's and the CON's of using HCG Diet is well explained and detailed.
The HCG diet includes using the hormone hcg either in drop or injection form and following a starvation diet. This diet is ineffective and very dangerous to do.
The reviews of HCG duet drops are definitely mixed. You can go to the following site to learn more: www.hcgdropsreviews.info/ .
The best place to look for diet program reviews would most likely be on http://www.webmd.com. Also check out some magazines, as they often have a lot of reviews on various diet programs. Some of magazines might include Woman's Day, AARP, Health magazine, and SELF magazine.
You will be able to find reviews of the iFit app online in the app store on iTunes. You will also due to the nature of the program find reviews on diet websites.
You can find reviews for Tony Horton's P90X program at http://www.amazon.com/P90X-Hortons-Extreme-Fitness-Workout/product-reviews/B000TG8D6I. It is an excellent program and you can even just purchase individual discs. Many doctors recommend the Core DVD.
The Diet Solution's website, http://www.thedietsolutionprogram.com/, has a lot of information about the program and it's benefits. The website http://dietsolutionguide.com/ has some reviews.
http://diabetes.webmd.com/diabetes-diet-healthy-diet-basics is a great site to help you plan out your own diet. It also includes information about diabetes and reviews supplements.
Diet Delivery Reviews is a good site to check out, because it gives an overview of most of the major meal providers. Website: http://www.dietdeliveryreviews.com/