according to toyota.com:
MacPherson strut front suspension with gas-filled shock absorbers and stabilizer bar; dual-link independent MacPherson strut rear suspension with gas-filled shock absorbers and stabilizer bar (SE adds sport-tuned shock absorbers and springs, and strut tower brace)
also the SE comes with at least 16 in or 17 in wheels. (215/60/16 tires),(215/55/17 tires) respectively.
4 channel, 3 sensor ABS with EBD(electronic brake-force distribution) with 4 wheel discs. ventilated front rotors, solid rears. --> 4cyl gets drums in the rear...
also, i noticed the toyota website said that only the XLE comes standard with the ECT-i auto tranny... i would prefer the 5spd but interesting to note. i wonder how much extra the ECT-i trans costs???