Layout planning software?

What is the best and easiest to use layout planning software for Lionel O-gauge track?

Sincerely,
Jonathan Baggs (tintrains)

I use RR-Track - it’s great to work with. You can see the results on my site - www.thortrains.net I’ve used RR track to design plans using Lionel and MTH O track, American Flyer and S-Trax S gauge, Large Scale, HO, N and TT. It’s great!