Thank you all for your valuable contributions.
Wolfshanze - you have given me some insight on the differences between the OOB units and HBG units in terms of scaling. Good to know and something I will keep in mind.
Considering that HBG and GHQ both scale based on realistic dimensions, they should both be more similar in dimension then either are to OOB.
CWO - I appreciate the links and will check them out.
Leather - I suppose this brings into question the viability of certain units on the board. For example, certain large heavy tanks and especially bomber planes might clutter the board too much. Does this appear to be a problem with appropriately scaled units? Even sea units, I would imagine, in the smaller channels.
John - I will try to find those videos. Much appreciated! Can you tell me, however, if the feeling of handling metal pieces differs significantly from handling plastic pieces?