HKS 2530.
Its a very responsive turbo out of the box, will spool early like you want it to, and has a fair bit of headroom if you find you dont have enough power (guaranteed you will get over it), you can make up to 230kw with this turbo earlier on in the rev range, which is great for around town and will give you some awesome corner exit speeds around the track.
With Tomei 260 cams, adjustable cam gears, 20psi boost, GTR injectors and PowerFC, we made 230kw at 6,000rpm. After that the power dropped off considerably but its was a manace on the street! Amazing mid-range torque!
Id also think you would be able to find one of these turbos for around 1500 second hand, youd be stupid to pay anywhere near 3k for this turbo!