I don't have much of a choice concerning the layout's straight edges because it's the only way it will work in my situation. On the other hand, there is very little tangent track in the whole plan (layout not started, yet) with most of my track being either curved track or spiral easments. I've always tried to keep some slight angles between the edge of the LO and the closest track because it does help with the illusion.
Speaking of Iian Rice's layouts, has anyone seen one that HE has built? I haven't, but I sure would like a link to at least one. I like his ideas, but I'd also like to see what the "preacher" has done.