Haven't watched either yet, am planning on doing so this weekend. So far, the 2008 offerings of Torchwood have been better on the whole than the 2008 offerings of Doctor Who (namely, the horrible Christmas Special!)
I know that will probably (hopefully!) change once Season 4 kicks off though - it has the potential to be a really good one from the sounds of it. I just hope they do a slightly better job with the Season Finale this year - part 2 of last year's was a little contrived, cheesy and lacking unfortunately. With the whole "bringing Rose back" thing, this year has that same potential, so let's hope RTD uses proper judgment with everything. 