For a short tour or a long all day ride this:
Lockable Rock Shox Tora, Full Deore group, mega range 9 speed at the back with an 11t, 48t large ring at the front, 1.75 26" slicks. I have a solar powered blinky and 4 other lights on the back and mount 1400 lumens worth of light at the front with spare batteries to last 12 hours to allow me to ride anytime. The bar ends and extensions give me lots of hand positions for all day comfort. Mounted a smart phone holder for GPS/monitoring/comms/mp3 duty on the top bar within easy reach. The small bag at the back can be larger if need be, but for my purposes that and a frame pack with good straps to spread the load work fine. This bike has gone 15,000km in 10 months so far. Longest ride in a single day was 220km in about 10 hours of actual riding time (with some killer climbs in the middle). Top speed of around 50-60kmh downhill (could go faster but I simply don't want to) and 28-35kmh comfortable cruise.