With the new HTA technology, there is almost no point in buying a new 3052. The DSM76 is the same turbo except with the billet (HTA) compressor wheel. Garrett followed this up with the GTX series turbo. The DSM76 was around long before the GTX, whichever one is better is still up in the air. The DSM76 IS the 3052 on steroids.
The PTE offering is now the 5858 which is supposed to be slightly bigger than the 30R, but again, back to back comparison is still up in the air for the new billet technology.
Buschur made 609awhp and 610ftlbs of torque with the 3076HTA on a Mustang dyno. Think about those those numbers. This was at 40psi, right where Robert at FP told him to crank it up to. The turbo still made good horsepower per pound of boost, a good indication that 40psi was not pushing the 3076HTA past its limits. Being a 30R, the HTA variant will never get the respect it deserves, but it really does perform well. The FP housing is on the small side, but it has proven to flow like a T3. I was able to rev out to 9000RPM and still held over 500awhp (peak was 557, out of fuel), power was not dropping like you would expect from a bolt on housing.
I accidentally had a 40+psi spike on ethanol with the DSM76, before it blew a coupler to shreds, it hit incredibly hard, I would have loved to see how it moved through the upper RPMs at that pressure, but I don't think the motor would have held though, I pegged the MAP sensor just over 40psi (it was free boosting, WG didn't open at all).