Ultracompact for marathon running - which ?

[kimnicho]

If it was me, I'd get the Pansonic FX8 for $225 as it is just a hair bigger than Canon SD400/450 but has the Image Stabilizer which should help you out A LOT ! Image Quality is vastly superior to WPI .... more comparable to the Canon SD500/550 which is not exactly pocketable (esp. when jogging)