2009/2010 XRS are the same...
The 10th Gen XRS is a little different from the 9th Gen. IF you ever drove a car with "Lift" technology (i.e. VTEC, i-Vtec, VVTL-i etc...) you would miss that glorious feeling. But the LE & S corollas never had it so yes the XRS would be a blast. It has plenty of Torque, and descent Horse Power.
The sport suspension is so-so... Aftermarket Springs are a MUST if you like to take hard corners. OEM parts are very low-grade.
the 2az-fe won't let you down though. Fun to drive, and sounds pretty good from the driver's seat.
The TRAC Control and VSC make winter easy...
Overall the XRS looks better IMO. It has the extra parts that make it look sporty.
4 wheel disc brakes are always key.
OEM Rims are nice... but most people here go aftermarket anyways... (not me

)
So buy according to your needs... i'm sure the S model has plenty of Pep. I got the XRS because it was the only one with VSC standard on it and 4 wheel Discs. Optitron Guages are nicer too... that Amber guage look bothered me.
I'd say go XRS... but test drive it. And test drive the Mazda3 GT. Both Cars are in the same class with similar performance... however the new Mazda 3 gets much nicer and newer tech features (HIDs, LEDs, Auto Level Beams, Dual Exhaust, smaller stock Wheel Gaps, better handling...) But ONE UGLY Front end...