I am sharing my experience with uber cabs. It is very helpful and service is also very good you will get cab whenever you want and the cabs have very good condition.
Having proper air conditioner and proper clean from inside. Drivers of cab are also very well behaved and the most important thing that you will find is genuine fare according to usage.
No extra charges you have to pay. Proper pick and drop facility. You will also get chance to get free rides by promoting and sharing their application so its a good facility.