not sure if you already know but the MK1 leon is the basically a MK4 golf with a body kit.
the only think i know about differences between the leon and golf are that the leon weights more, so slower and less economical, however its cheaper / you might get more options for your money.
one thing i found when i was looking for my car last year was that the leon TDI 150 is a rare car, my golf took searching to find, but there were less leons.
Oh the leons are 5 dr only (can be a problem for some) personally i think both the Golf and Leon 5 dr's look good, where as the A3 doesn't
I'd imagine that the leons suffer the same problems as the golfs which you can find in a sticky.
pro's wise, solidly build, very good performance from a diesel whilst still returning over 50 mpg.
you get a good standard spec from both the 130 and 150, the 150 gives you the 1.8T suspension a front mounted intercooler and bigger turbo, you also get the V6 4 motion front spliter

heres a fooked up think the 130 gets the front arm rest as standard in the 150 its a £110 option
