explorer 2

We have had endless trouble with our explorer 2. changed it 4 x in the last 3 months. we have a house with 3x explorer 2 and to we have an explorer 3 spare. if we change to the explorer 3 it means the other two explorer 2 will not be compatable. this is the way multichoice forces a person to now go buy all explorer 3 to make more money. the explorer 2 giving us trouble is the primer decoder exchanged 4 x and one week later hard drive gone again. they are phasing our explorer 2 for all to know this forcing your hand to buy all explorer 3 until explorer 4 comes out then you forced to buy that. for us that has 3x decoders in the hourse this i becoming a very costly excercise. money making.