Taxis are probably the most comfortable way of traveling. It is usually not difficult to hail a taxi anywhere within the city (and restaurants and hotels will readily summon them for you), although it is slightly harder to find one during heavy rain or peak hours.
There are several taxi companies which are usually metered, but there are also unmetered ones where the fare must be agreed upon before departure.
Reputable taxi companies are:

          - Mai Linh Taxi:  Tel: (08) 822 6666
          - Saigon Taxi:    Tel: (08) 842 4242
          - Vinataxi : Tel: (08) 811 1111