I use Culturelle in the mornings and 1 small bottle of DanActive in the evenings. These work well for me.

Some use Align. Or Acidolfolis (sp?)

And then there is VSL #3, which is pretty expensive, I hear.

Have you tried stinky French cheese? Works great! (no joke)...one of the reasons that the French are fighting so hard against the European Union to not be forced to pasturise thier cheeses is because it kills so many of the healthy bacteria...they don't drink unpasturised milk (although it is availible if you look for it)...but most good cheeses here do not use pasturised milk...And the population that consumes them seems to have a much lower rate of intestinal problems and diseases...Hhhhmmmm...Very interesting...and not stupid.
Holistic health specialists reccomend it. (I guess it beats a fecal transplant and tasts better on toast).
Not sure if it is availible where you live but if it is only on the rare occasion that you need the probiotics then it could be worth the try...
Other than that, I used the GNC brand when I am home and can get it.
Sharon