I have no experience with the crossover, I actually like the design.
That said, I would have a hard time buying a terex product. Their parts department is terrible. It doesn't seem to matter who the dealer is, terex just can't get their act together. Slow response time, no availablilty, etc.
They have new great slogans every year, but if you have a crane over five years old, they really couldn't care less about you.
The rt and truck cranes I've been around are not terribly robust. Cracking frames etc. They were typically cheaper by $100,000 than a grove or a link-belt new, and there's a reason why.
Just to give you a example, the 60 ton truck cranes from the early 2000's used a custom aluminum bellhousing for the pump drive. Instead of just driving it off the front crank, or using a iron casting. The bolts get loose, or the vibration of the motor and the torque cause them to go bad. Can't get them because they were custom. Last time I was talking with a guy about them was 5-6years ago, and a used one was on ebay for $18,000. A new one- if you could get one from terex, was list for over $40,000. Can't run your crane with no pumps....
Can't get parts for your old microguard computer? tough.
A year or two ago, they had a "consolidation" of their parts distibution in europe- basically outsourced it all, and moved all to one location away from the factory (I'm sure for a write down/ bean counter reason) And it was a huge, huge disaster. no parts shipped out for months. It was in a few articles, but most of the trade magazines, don't want to highlight stuff like that , because terex advertises in their magazine.
https://www.vertikal.net/en/news/story/30545/