I was about to suggest that article. It's a really well written and informative piece.
However it only compares vehicles.
If you are looking at airplane kits you probably want 1/48 rather than 1/35. The reason is that even small airplanes are surprisingly large.
Check this thread about helicopter models for some more information on scale issues.
http://www.dakkadakka.com/dakkaforum/posts/list/223663.page#461254