The most helpful thing about hitech bim services was their ability to understand our specific requirements that we had not been able to find elsewhere at this time when they were hired by us (and still are).
They also have an amazing project manager who really takes care of you throughout your experience with them - she's always available if there ever anything comes up or questions arise during any stage along way through production process! I can't think right now what else i dislike so much but maybe it would be something small like having too many options/features which make things more confusing than necessary? But overall everything worked out great from start till finish!! We used both Revit 2018 + AutoCAD 2017 versions simultaneously while using other software such as Sketchup Pro 2020 version etc..