Well, did your criteria change? Earlier, you said money is not a problem and that you wanted the fastest Evo possible (0-60, 1/4, everything), and to do this, you have to make sacrifices. In this case, going with such a big turbo makes daily driving a pain, because it takes so long to spool and requires full time race gas to run the boost that makes it super-powerful. If you do one of these GT35Rs and want to drive daily on pump gas, you'll have to turn the boost down and have like 450whp instead of 600whp. If you want to go really fast and still have SOME low-end power and quicker spoolup, then you would need to also get a stroker engine (2.3?), but then you sacrifice high rpm power.
Right now, it's really best to either stick with the stock turbo, which you can get up to 400whp and be completely streetable with low/mid-range power, or go with the gt35r for extreme top-end power. There aren't really any other turbos that are proven as much as these two...