BTW eibach springs for WRXs should be a good choice, not too expensive, great quality, and a little drop like you are looking for.
also, I don't know anybody locally with their products, but EPIC Engineering seems to fabricate great products for subaru, I guess you don't know Epic, but the company is based in california, and the owners are former Prodrive engineers, now.. if you don't know prodrive.. they are based in the UK, and they were prepping the cars for Subaru World Rally team.. with their springs, you are talking about 1 to 1.2 inch drop on a 08+ WRX