having had the flex's on previous cars and megans in another car. id so go with the megan its cheaper and unless your hard core into roadracing/auto-x you wont be able to tell the difference.
if it helps in your decision at all ill be getting the megan track series for my sti.
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07 X-Runner
TRD SC- 7 PSI 342 whp 360 tq
DJM 3" drop up front
SS sways front and rear
custom 4 link with QA-1 coilovers w/300lbs springs
Ipad in the dash.
Grip or Bust.