it looks like the price on the ventus rs2's went up (153 a tire):
Tire Details - Discount Tire Direct
the azenis are priced at 117 a tire
Tire Details - Discount Tire Direct
and the RE01R's are at 159 a tire
Currently Available Prices and Sizes
if u dont mind spending more, i would go with the RE01R's. i have had the azenis and the RE01R's are a huge upgrade from them... good luck.