If you are looking for a comfortable TT/bullhorn style bar: Zipp Vuka Alumina was my favorite but if you like the upsweep the Cinelli bars are great (formerly done with MASH SF but now on their own) I think also 3T did a nice looking one but I never was able to get my hands on it.

If you are looking for a drop bar: Zipp Service Course SL-70 Ergo would be my top choice as I have them on three bikes currently and probably will end up with them on four of them in the near future. Super comfortable flat top section with a nice transition to the hoods and a good compact drop. They also make a heavier version which is cheaper and one out of carbon which is not but not super duper light both are listed as 70-ergos. I am using a Cinelli bar which was slightly similar (flattened top section) but honestly I wish I had just gone for the Zipp bars to start but I thought "try something new, it looks similar enough, you want to save money right?".The only other bar I really want to try right now is the 3T Superghiaia when it comes out in aluminum but I may get the carbon version at some point if they don't. However I don't have a bike for them yet.

For Flat bars: Ergon grips, Ergon grips, Ergon grips! The bars don't so much matter to me as long as they have Ergon grips. However I do have an old set of Ritchey ForceLite bars, Thomson Ti bars and a Spank Oozy Vibrocore bar but the Thomson and Spank aren't on bikes yet as I am still gathering parts or just trying to make time for the build but I have Ergons for all.