Just got done reading the latest discussion. No worries at all from my end. I always welcome civil discussions like these... just keep it adult and respectful as you have been
As far as how drivable our turbo is...
I won't pretend it spools faster or quite as fast as an IS38 as I don't like to spread false hype. The full boost threshold on our turbo is around 200-300 RPM later than an IS38. The difference in transient response is noticeable under about 4000RPM where the IS38 is a bit more snappy and our turbo spools a bit more linearly/smoothly. Above 4000RPM, transient response is very similar to the IS38 and I'd imagine most people wouldn't be able to tell much difference. The big difference of course, is that our turbo makes more power overall and keeps pulling hard to redline.
I think I already posted this, but here's a log of a 4th gear pull with our turbo (DSG Mk7R). This is an on-road pull in ~75F weather running E30. Dyno pulls will generally show slower spool.
Please note all of this definitely depends on proper tuning as well.
Thanks
-- Ed