I have the rx130 pro ( low volume ), Well I bought them because I need the flex of a race boot and when I saw them and tried them I was in love. They are perfect for everything, really like them when I'm skiing groomers. They have a good response ( I don't know how to say that, but the react really quick) and they are precise. I was skiing riding some nordics doberman 130 flex, don't remember the specific name, and the rx130 are better in every way. The sole is really grippy too and the calm lock strap is very good IMO. Really good boot, try them and if they fit buy them.
This year they have the xt130, take a look at them if you are more into touring of backcountry.
If you have any other question pm me
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