I have a 39/1& and although it is sometime a bit of a short ratio, on the massive downhill from work, I can outride very fast people on a 52/12 by never braking (who then overtake me again on the flat bit). So far to be honest I never use the smallest gear, so for me a 11/32 with a 39 front makes a lot of sense**
** I am not a roadie, therefore barely ride more tha 80-90 kms in one go.