Ok so everyone has probably done the best shock, shock vs coil over to death but I'm more interested in the best budget OEM replacement.
A quick search reveals there are 3 or 4 options for the AW11 (prices are delivered or local):
KYB GR-2 $440
Gabriel Ultra $320
Monroe Sensa-trac $440 (can't find local or anywhere that ships them to Aus, price is estimated)
Tokico HP (blue) $520
The Tokico blue are the stand out best of the lot but are not far off the price of Koni Yellow ($755 from twosrus.com at the moment).
I've had Monroe sensa-trac on an SW20 in the past and found the ride very comfortable but still responsive enough to have some fun. They complimented the stock suspension set up well for the road but I certainly wouldn't consider them for anything more serious (or a weekender), this would make them perfect for my application but can't find them in Aus.
KYB have a very good reputation and you'd consider the Toyota OEM manufacturer would produce just as good of an aftermarket product but that doesn't appear to be the case with their KYB GR-2. The consensus from the majority of reviews indicate they're soft, spongy and don't stand up to hard work (everyone from Echo through to Supra owner, even Honda owners agree!)
The Gabriel Ultra (cheapest and nastiest some would say) have nothing but good reviews. No one argues the price is right, but most people who reviewed them found the ride slightly firmer than factory and they handled a beating. The biggest problems came from 4x4 owners (Pedder's off the shelf 4x4 replacements) who had increased the ride by more than a couple of inches or towing heavy loads. The problem is I've not found many reviews from small compact sports car owners that are looking for the same ride I a; Any complaints from this group are not with the product but that they're not Koni's. Has anyone tried the Gabriel and know if they're a reasonable OEM replacement in a car like the AW11? $320 is the 25% off price at Supercheap that ends on the 10/6/13, though I may be able to get them direct from ATAP.