Transfers are limited by the CPU transcoding the videos, that's why its slower. Premiere is faster, faster CPU.
Video of transfer speeds.
Original S1 (Recycle Heaven)
Series 2 (PLS, sold)
TiVo HD 1TB (157 HD Hrs, PLS, "652")
Juliet Basic (4XL, PLS)
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!