Yup, you're in good company in being frustrated with the products. There are a bunch of threads on them in this forum and in the FAQ. If you search, you'll find them. Most have "Kraft" in them somewhere...
Here are a few from the FAQ (note the dates, okay? Some are more than 2 years old...):
SBD Items from Kraft?
South Beach Foods in Stores
New South Beach Diet Bars
Basically, some of the SBD products are better than the other things that are out there. For instance, my nutrition clinic recommends the SBD Cereal bars to all their clients because they are very low in sugar and high in protein. Nonetheless, the point of SBD is getting away from processed foods--so use your best judgement.
If you're going to use the SBD processed foods, just make sure you pay attention to what phase they are--I don't think any of them are safe in P1 except some of the frozen meals.
I do like the cereal bars some of the time, but know I need to stop eating them as the malitol in them can cause cravings and definitely does for me.
For cereal, some choices are Uncle Sam, Fiber One (only the original), Cheerios, Shredded Wheat (plain, without sugar), plain multigrain flakes (no sugar), etc. Try health food stores or sections of the supermarket. I found brown rice crispies in mine!
Hope this helps!