Thanks for all the posts and suggestions! No, I don't cut unistrut with the tubing cutter! Good one though!
I have used my sawzall (Makita), but seems sloppy sometimes. Could be operator error, not sure. I was on a job where we were piping (EMT) and making lots of cuts. This was the time I realized that I need to be cutting with something else...circular saw, portable band, was not sure. I have used my friend's Panasonic and loved it, but I have not see that at our local stores (Phoenix). I am going to research some of the suggested tools and price them out.
Thanks again for the suggestions! I'll post what I end up with.
BTW, I love getting new tools! Especially ones that save me time and effort!