I can not speak for RBI, I have never sat at one. I do have a Hegner. I also have a Seyco. It took me some time to get along with the Hegner after I purchased it. I mean several months before I was really comfortable with it, as I was with my previous Excalibur and now my Seyco. The tensioning is very important. Not set right you break blades... often. That said, I am totally "at peace" with my Heg now and it is my "go to, and if I could only have one saw" saw. Will it so things the Ex wouldn't, no, does it cut better, ,, no. It will be around after the Ex/Seyco is dead and buried, I think, but I won't be around long enough to bury my Seyco either.... I just like the Hegner, it runs great, quieter than the Ex/Seyco even, and I worry not about stripping the threads on the clamps or spreading the clamps from aluminum fatigue. I put a few drops of oil on the bushing occasionally and scroll on. If something does break, I know I can repair it, although the parts are very expensive.
Now none of this will probably help you in a decision, and I really don't want to. Saws are a personal preference IMHO, and what I like other may fine not so wonderful.