Hi there - we've got a whole home Reno project we'd like to tackle in the next 2 years and I'd like to be able to draw some different design ideas before going to a architect or a contractor. I find it easier to show ppl what I mean rather than try to explain it. I'm willing to spend some money on software and I'm relatively tech savvy but not auto cad level. I used floorz before but it has limitations -- slopped ceilings and stairs. I use a Mac desktop. Any recs?