I am not an N gauge modeller, but my observations are that Peco code 55 plain track looks good, but the illusion is let down by the clunky appearance of the points/turnouts.
I do rather like what our American cousins have to play with...MicroEngineering's{?} code 40, and code55 track, and turnouts....not EASILY available in this country, but obtainable, and of course available direct from the 'States?