ZBrush lets you retopo manually, you don’t have to use remesher if the results aren’t acceptable.
Modo is also good at retopo of hi res geo. Recently, Maya has finally gotten good at retopo work (2014 and up).
For UV mapping, UVMaster (ZBrush) is good. Maya with the Ninja Dojo plugin is great for just about everything.
However, one of the best UV unwrapping tools out there is Headus; it’s amazing and once you use it, you will be hooked and wonder how you ever unwrapped UV’s without it.