Not much use to the i4 crowd, but The REAL t3/60-1's are one of my favorite turbo's. 90% of a GT35R at 50% of the cost. I highly doubt the chinese ones achive the exact same power (as with any of the chinese copies for that matter). But on the larger 3.0L class v6's I've used a pair on they'll put out 500hp+.
If I was asked what turbo I would want on a 3-4L v6 and had $600 to choose it'd likely be a t3 .63 (or .82-.97 if avalible) / 60-1 hybrid.

Just my personal t3/60-1 comment... Id probably never buy the chinese ones tho. Wouldn't trust the bearings, old seals or balancing.