to be honest i wouldn't say there was much between them.
I see a lot on other forums that those that don't have sky have to bash skys coverage and those bought sky for the f1 have to bash the bbc (just to be clear, i'm not saying thats happening in this thread, just a lot of the rows i've seen elsewhere seem to boil down to this)
i've had skysports for years so for me the shared deal had 0 impact. i was quite happy with watching F1 on the beeb, but at the same time i've no issue with watching it on sky either.
for me, the bbc seemed solid as usual(i'm really glad ben edwards finally got his chance) and i thought skys coverage evolved over the season as they got more comfortable with it.(as we saw in 2009 with the bbc)
for every criticism you throw at one theres an equally annoying thing about the other. (eg, sky have the dullness of damon hill, the bbc have the embarrassingly bad eddie jordan)
i'd say i drifted more to watching the races on sky as the season went on but thats mainly because they have all the races live.
2 interesting side effects of the new deal though.
first, i would say i've watched more GP2 and GP3 this year than I've ever done before. (even though GP2 was available on eurosport before, i didn't tend to pay it much attention)
secondly, because i've got sky and the first races weren't live on the bbc, our other F1 fan friends ended up coming over to ours to watch them.
this then started a tradition which stuck for the entire season of everyone gathering at our flat to see the race whether we were watching it on the bbc or not.
which turned it into a more social event which for me at least, was a more enjoyable experience.