lets get some facts straight here
ball bearing turbos do not spool faster , journal turbos are floating on oil
The good thing about journal bearing turbos is they can be rebuilt. Try that with your ball bearing turbos
N1 turbos are not laggy if you find they are then look at your tuner not at your turbos
Just because some one had a mates cousins dad with a bad N1 turbo tune it seems to have become an internet rule that N1 as laggy.
And to be honest with the crap that garret has been delivering of late who would want to buy new turbos from them