Re: advice please on best tests for candida and sibo bad bacteria

Actually, I don't blame everything on candida. That would be ridiculous. Many imbalances within the digestive tract are created by antibiotics and their effect on the microbiome.
Candida and sibo are results of antibiotic use. Candida drives a lot of inflammation in the body, which links it to over 125 conditions and diseases - http://candidaplan.com/blog/568/120-common-candida-symptoms/.
SIBO is still a relatively new diagnosis and does very little to further anyone's understanding of what's taking place in the body. It is caused by antibiotic use and creates antibiotic-resistant strains in larger proportions than what should be there. This is due to decreases in the other bacterial ratios caused by antibiotics and regulated to some degree by fungal candida, as well as the antibiotic resistant strains. The main bacterial species inhibited by the presence of fungal candida is the Lactobacillus species. This species was recently found to play an important role in deterring what the ratios of the other bacteria are.
In addition to the presence or absence of candida, you should be looking at what other species are present, as that can affect intestinal function one way or another. If you're not going to balance the intestinal flora, then most approaches won't produce long-lasting results.
If you're going to try and just kill something, as though it existed in a test tube separate from the body, that won't work either.