I use both Git and Mercurial and I love Git, but I think that Mercurial is far better for the typical environment, where it's already virtually impossible to convince people that they should switch from Subversion to something decent.

I think that most programmers will learn a little Git and then run away fleeing in terror and become all the more entrenched in their woeful belief that Subversion is adequate. In this sense, I think that Git is doing more harm than good. If the current buzz were for Mercurial, which is far more approachable than Git, I think that most Subversion users might try Mercurial out, think, "Hey, this is pretty nice!" and then be perfectly happy to switch. Git, on the other hand, offers all the power that anyone could ever need, but even I, who am pretty fluent with Git, often have no clue what other Git users are talking about when they explain how to do something. I never have that issue with Mercurial.

Also, I've never had any problem with histedit. Though hgsubversion has definitely caused me to get a few extra gray hairs from time to time.