Mobile - Add on recommendations?

I am new to Sage and looking for a mobile platform that will interface with Sage 100 Contractor (formerly MasterBuilder) My employers purchased software that will be difficult to implement with the current program before I started here. I've been researching Sage Service Operations, HH2, and FIT. I'd like to know if anyone has implemented any of these add-ons and if they are working as they need them to without multiple issues. Any comments, feedback is greatly appreciated.

Thank you!!