I bought this car from a guy last year and am thinking of buying some
new tires as the wear appears to be uneven and now the car pulls to
one side.

I noticed (probably should have noted this earlier, but I was having
too much fun driving it) that there were standard P205/50R16 on the
front, but P215/50/R16 on the back. A tire store guy told me that FWD
cars should be same size matched all the way around.

Question: Is the tire guy right, should I have the same all the way
around? Also, what advantage would 215s give me, just a wider
tire/more road contact? Then should I think about 215/45/R16 to keep
the same relative aspect ratio? I'm leaning towards P205s all the way
around. Any brand/type recommendations while you're at it?

Thanks,

Rob