US -05 is the same strain as White Labs WLP001, according to many sources. From my experience, it is a workhorse with high attenuation.
Dry yeast has much higher cell counts than liquid yeast, out of the package, so are better suited for higher gravity beers if you are not making a yeast starter.
What was likely happening with your previous tries with liquid yeast is that, because the cell counts were low, the yeast were having an extended replication period, where they were building their numbers and strength to get the job done. Making yeast starters are the way to go with liquid yeast, or pitching multiple vials.
But in my experience, US-05 will do the job for you. As suggested above, hydrate the yeast before pitching to maximize the cell count.