If you have 2 or more monitors, having 2 different sessions open at the same time is nice.
We work with LT98, and I often have 2 sessions of ACAD runing, one on each of my 2 monitors. I find it easier to work from one dwg to the next without having to switch like you have to do on one monitor.
I also have a copy of LT2000i, that I was going to start using, but I cannot display 2 dwgs at once, (one on each monitor), like I can with my LT98.
Just my input, for what it's worth.
craigr