The point I would stop using drop bars is when/if I cannot ride a bike anymore. I use compact bars with around 75mm reach and 125 drop. I really like the Zipp Service Course 70 and 80. I like the Soma Highway One, also. I have an Orbea branded compact, do not know who actually makes it, that is very comfortable for me. I ride in the drops quite a bit, and I change hand positions frequently, using pretty much the whole bar and hoods. I used Profile aero bars years ago, but with chronic back and shoulder issues it became too aggressive of a position.