In my experience, liquid yeasts are far superior to the dried versions but I have only used British ale yeasts, nothing else. Liquid ale yeasts take my brews into a completely different realm, the different yeasts impart character on the brew that you just can't get out of a dried yeast. They are true top fermenters and produce a real krausen ... give me more.
Unfortunately, I can't get hold of liquid yeasts very easily, otherwise I would use it all of the time. When I do get hold of it, I pump through three brews and top crop and repitch ... the results are always excellent.
In dried yeasts, I have had good results with Windsor and S23. The recently released Danstar ESB has given decent results but it is not as good as the liquid Wyeast 1968. My next experiment will be to pitch Danstar ESB and then top crop across several generations to see what happens.
I really don't like US05 at all so I wouldn't even consider using a liquid version of the same thing. Personal taste. Can't help you on that one.