>>1404277depends on how you use them
a steeper angle like
>>1403912 is good for sitting upright, but restricts access to brake levers
>>1404289 is close to an angle where it would be possible to quickly reach the brakes>>1404291 is a little too low unless the seat is very high up or the rider is standing (note brake lever angle)the key is really to balance the angle between how they feel when used standing up vs seated
and how easy it is to switch to reaching the brakes (hence why they are mostly used when the road is clear)
ways around this are to use pursuit bars with Guidonnet Brake levers
or to use a combination of TT brake levers and interrupter levers
>>1404106the use case for them is to give your wrists a rest on long straits
and for MTB use they really aid in climbing up hills
