Zealot- you're near Perpignan? I was there last summer and often spend time near Euaze and Mont de Marsan. Great cycling thru the Armagnac region...

On topic- I take the same way both directions every day (2/3 MUP, 1/3 roads). My only other alternative is decent roads most of the way but it dumps onto 123 near Tysons Corner and I'd have to negotiate a ton of on-off ramps for 66 and the Beltway, not exactly my cuppa tea.

So to freshen things up I lengthen my ride home often, hitting the library or just attacking some hills I'd otherwise not come across.