X Speed are the cheapest i've found, then again.. never taken my corolla there just my wrx.
Tis a modified corolla bonnet similar to the style of the c-one bonnet.
In my humble opinion if you are just starting off driving and modifying you can't go past a 1zz, sure if you have spare cash lying around and a fair amount of driving experiance then go for the sportivo. I made loads and loads of mistakes in my little ascent, and lived to tell the tale.
conquests are a little more on the 'luxury' side, for the cash I would probably just get an ascent if you are going to modify.
The normal corolla's will never be a fast performance car as much as I wish they could be, however you can certainly make it much more fun to drive. TRD CAI, catback exhaust, extractors, ecu management, short shifter, trd flywheel, pressure plates, plus many other things are around to help you modify it. It certainly feels much better to drive when you start tinkering with it. Then you have the suspension debate where you will at one stage will want to do all the mods you can to the suspension With good suspension you will be able to outrun or keep up with the horsepower hero's around corners and roundabouts easily.