Ok, found the thread, so I'll contribute.
My turbos were smoking a fair bit so I was presented with what to do about it. Going single was never an option, I can't afford to do it properly, so I'll settle for the best I can get. New turbos from toyota are 2k last time I checked, (without fitting costs). For that money, I could have my old Jspecs reconditioned twice over I searched around at all the options. I even started a thread about all the companies that recondition turbos, and got prices from each.
I then researched issues that people have had with hybrids to find out the low down on them. Two very important things to factor when going hybrid. 1) If your casings are cracked, its not worth reconditioning them, they won't last any time at all. 2) who's doing the work.
So, First thing is to get them inspected to see if they're in good enough nick to go down the hybrid route. Supraturbochris bought a second hand set of hybrids from a member and they ate themselves within a day or two, he stripped them and found a bodge weld repair from a crack in the casing, proving my point. (the hybrids were built by turbo technics). Chris has now had his original turbos from the car hybridised by CRturbos, and they are back on, and running beautifully.
When it comes to getting the work done. CRturbos have been the best recommended that I've found. Sure, Jamie is right, I've only had the hybrids on a few months, but Blackwatch666 has had them on a few years now running 1.2bar on an almost daily basis I believe, without fault.
I made a point of asking CRtubos to thoroughly inspect the casings on both sides for cracks before commencing any work, they confirmed that my turbos were in excellent condition apart from a leaking exhaust side seal. Getting this done alone would have been considerably cheaper, but I wanted the steel internals so I can run 1.2 bar without being on the threashold for the turbos limit.
As for lagginess of the steel turbines, yes, they boost about 300-500rpm later (seems to depend on outside temperature), but it's a compromise I'm willing to pay for stronger turbos.
Hope this helps, if you have any specific questions, feel free to ask