I have been using one of these, bt the unbranded one from huawei for the last 4 or so years, they deliver on speed and reliability.
On quick notice is the battery, they die quickly which means the mobility party of depends on the durability of the battery or if you willing to carry extra batteries around.
Also, if you connect it to laptop or pc and you are on limited data bundle, you will be shouting unspeakable words to the gods of internet as it seems data flies out quickly
Now with the way econet charges, l wouldnt want to be a neighbour of anyone with it!!