Monday was a SRD, today (Tues) was a nice city 5 miler.  Great early morning conditions, low 50s and crystal clear.

Qotd:  99% of the time I use one or two handhelds (UD Plus that has a little pocket for gels and stuff), just depends on conditions and access to refills.  I also have an older 2L Nathan hydro pack when refills are not available or I need to carry stuff.