This kind straight handles
or this kind?
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Sign up to join this communityMy priorities:
Right size for you. A must.
Light weight as possible/desired
Low price - it needs to be do a simple job without being a thief magnet (at least here)
The difference between handlebars, or in general body postures on bicycle, starts to show itself at distances of 50 km. For 5 kilometers a day, which I assume consist of two intervals of 2.5 km each (to work and back), it really does not matter. I would say gearing would play more difference than type of bike.
One style of flat handlebar is not absolutely better than another. You should test ride some bikes and see what you personally prefer.
Bicycle stores offer test rides in the USA, but I realize it might not be the case where you live.