The Surly Troll has been the tried and true bike to do a world tour on. This would also make a great commuter that will last ages. This has the plenty of braze on mounts to mount any type of rack, basket, or bag.
Rear Derailleur- Shimano SLX 9 speed
Front Derailleur- Shimano Deore Triple
Shifters- Shimano Deore
Crankset- Truativ Stylo
Handlebars- Surly Open Bars, super comfortable!
Wheelset- 26″ Mavic
Tires- 26″ WTB Ranger