I used my F35-70 zoom for the "Single in November" challenge last month. I have written a short review of how I got on
here. Rather than repeat it all, I thought I would just post the link. This is the fourth month I have managed to take a photo with my chosen lens every day, although some technical issues have resulted recently in my not being able to post them immediately. I only have two F-series lenses (I think...), this one and a F50/1.7. The 35-70 is really rather good (especially if one tweaks the focus manually using live view) and represents very good value for money.
Cheers, Kris.