My SP60 is my daily driver. I have had no problems with it (except for all of the install screw-ups that resulted from Toyomoto and the recent screw up at Toyota). The cars lag is no problem what so ever.
One thing that you need to have while daily driving an APU car is knowledge. If something goes wrong, you need to be able to figure it out quickly. Otherwise, you will be spending a fortune and a lifetime taking it to "professionals".
As far as the three different manufacturers are concerned, Larry has a killer product that everyone raves about. It performs like it looks, spectacularly.
Dimitri has the best bang for your buck product. It may not he the best looking kit on the market, but what else can you ask for when you pay two grand less for a complete turbo kit? It’s the best bang for your buck, period.
Larry and Dimitri both have exceptional service. I have spoken with Larry, Gary, and Ivan at SP numerous times on the phone about some of the problems with my car. They have even been so kind as to help me with things that couldn't be deemed within the rhelm of their responsibility (my recent oil blowout).
Dimitri has also been killer. I have seen how available he has been for Grant. If need to have a part made, Dimitri is your man. He can make anything you want. Grant has been able to discuss many different theories with him (water injection, raised fuel pressure instead of upgraded injectors, etc.) and Dimitri has been quick to offer support. He will be making some special parts for me very soon.
I can't say the same for PHR. I have called them numerous times with simple problems and they havn't been there either. When I was shopping for a turbo, PHR wasn't there for me. They just wanted big fuel, big intercooler, big everything. I guess they need that margin of error to tune.
I have heard tons of good feedback about SP turbos. If there is a problem, Larry will stand by his product and do whatever it takes to make the customer happy. In his minds eye, customer satisfaction is first and foremost. Customer satisfaction is driven by their availability and the quality of their product. QUALITY and CUSTOMER SERVICE is what they deliver, not some fancy stickers or archaic trends. Technology and tuning talks, that’s SP and Direct-engineering (Dimitri).
PHR is never available. They will not disclose the details of any of their products, they will not help you with your problems, and they will never compare to SP or Dimitri (direct engineering).
Reputation is important. But most of the time, delivery reins supreme. SP and Dimitri have come through on delivery while PHR has not. IMHO.
Cheers.