With your budget do check out Jeff Tan. He has a good reputation for making good budget setups. He is in Araneta Ave. SHop is called Araneta Car Accessories.
In Banawe, I highly recommend Candyshop. They have different pacakges that will suit you. I think they have a package that fits your budget perfectly. Quality is top notch. They can make car show quality setups. Look for Nogs.
Here is a sample of their work.
http://www.girlracersclub.com/grcfor...p?topic=3055.0
TEAM Cars in Banawe is also good. Look for Kerwin.
Also in QC just behind National Bookstore in Quezon Ave is Quest Car Audio. They can make car show cars. They are a bit more expensive than the usual Banawe shop but you get what you pay.