Of course this is only my opinion but I think the way Minelab began it's introduction of the X-Terra line was pure genius in more ways than one.
Not only did they put their newest detector out there for testing in the hands of folks like Andy Sabisch and other tech-no type testers, but also gambled and put them in the hands of many others not so well known, and in larger numbers than I've ever seen a manufacturer do.
With the overall results they got and we constantly see posted on the forums ... well, it turned out to NOT be such a gamble on their end at all.
The X-Terra series are now one of the hottest selling detectors on the planet, and for good reason, they are well designed, easy to use, and extremely potent.
I have YET to take the X-Terra ANYWHERE that it wouldn't perform admirably, matter of fact, it usually performs better than detectors that cost much more and without the weight factor.
Now we have the X-70 show it's face, guess what ? It has everything that most posters have wished for that the 50 didn't have.
Well almost everything, I can appreciate why some folks have asked for a back-light but also understand why Minelab didn't offer it too.
Battery consumption and the extra weight factor for batteries needed to run it, plain and simple !
Job well done Minelab
Mike