OK, so here's what we've got so far:

1 - Darius doesn't understand aGPS, despite it being explained many times.
2 - Darius thinks that we know why Nokia chose to use the TI chipset instead of the Sirf
3 - Darius thinks the Sirf chipset is superior. He is probably actually right here.
4 - Darius thinks that shouting will get Nokia to stop using the TI chip and succumb to his will and replace the TI chip in his N810 with a Sirf chip
5 - Darius thinks that Nokia used the TI chip just to annoy HIM, as part of a personal vendetta against him

Have I missed anything?