Hi big ron,
my vote would be for the 24-105L as a general walkabout lens. I use mine about 90% of the time on my camera. The 24 isn't very wide on a crop body but I haven't found that to be too much of a problem so far. (I also carry an EFs 18-55IS just in case as it's small, light, cheap and can produce good pictures but then I can't compare it with a £500 Efs17-55 f2.8)