I seem to remember that really the only differences between the R and L were:
E start, and associated wiring/battery
I also think the L has real crappy CVK carb, but i can't be sure of that.
They are both easy to ride, soft, dirt couches. Neither of them are sharp trail weapons, so honestly I would get whichever model you find first that best catches your eye. Already having a street legal title and plate woudl definetly give an edge to an L model in my eyes. By this time, you can surely find tons of cheap upgrades for the 250 on ebay or other websites.
'If you wanna play tough, you better be stupid!'