Hey Valo. You just missed our meet last Saturday!
http://www.toyotanation.com/forum/t94794.html
Any one of us would have been willing to take you out for a spin. We meet up twice a mth. Once in the westend @ Krispy Kreme Mississauga (every second Wed. of the mth) and once in the eastend @ Kennedy Commons (every last Sat. of the mth)
Sounds like you go to Centennial?
In terms of fuel, both the 1ZZ and 2ZZ are 1.8L. The 2ZZ-GE in the XRS sips gas on the hwy. The 1ZZ-FE in the base/XR gets even better gas mileage. I can get about 500km out of a full tank in my 03 XRS 6spd. I've heard some auto XR owners getting 600-700km. Crazy.
As xrs22 mentioned, the XRS requires premium due to higher compression. It's been costing me just under $50 to fill up lately with gas in the high $0.90's/litre. When gas was still in the $0.70's/litre, it was costing about $40 roughly.
The stock tires on the 17" is 215/50 so the ride isn't that hard. I've even gone down to a 225/45 and the ride is about the same.
Just check autotrader.ca for prices. Last time I looked, for used 03 XRS', they were going anywhere from $16000 and up.