Mixtrack Pro is still very very good and works nicely with DJ Intro.
I agree the Beatmix looks nice and looks to have bigger and nicer jogs than the mixtrack, but it is more targeted towards VDJ.
The Mixage is also pretty nice and I think Phil did a lot of his course lectures with one and I know some mobile DJs who still use the Mixage for their mobile gigs, so it cannot be bad.
I never tried the Behringer, but Behringer has a pretty bad reputation, they seem to make up for it lately, but until you really tested the unit you cannot know if it is one of their “new and improved quality” or “old and really bad quality” products. So I would never order anything from Behringer without having it in my hands first.