Of all of 'em I prefer Driving Television, then Motoring200X TV, then Motorweek (but gawd those voices are so monotone and annoying after awhile). The new Driver's Seat is absolutely horrendous.
I haven't seen the latest incarnation of Driver's seat -- that show has been thru more formats than I have clean underwear...
I actually like Car/Business, despite the annoying Michael Vaughan... then Driving Television (I like Lacey)... then Motoring 20xx (I like Brad and Bill, am OK with Kenzie despite the preaching, and am less than thrilled with Graeme)... Motorweek is pretty vanilla, they never have strong feelings on a car, and why they waste time with Pat Goss I cannot fathom.