Miltek exhaust gets decent reviews and sounds awesome. Ring @ABP Motorsport and chat to them about it as I know there's 2 different versions. They are mega helpful, very knowledgable about everything and normally have the best price on the Miltek.
It's only ever so slightly above your price range as well.
I really liked the sound of the Miltek when I had one on. Must have been around 5-6 years old by the time I had to replace it (or fix if I wanted but fancied a change) so it endured many miles and track days well too.
I had the non-res and believe it or not it was probably quieter than my current resonated Tegiwa single exit (2.5"), and with less drone too.