Fairchild Channel F 5. Each system has its pluses and minuses. Some are more glaring than others. So I made a list of the good and the bad of each system. Hope this helps a little in your collecting.
Good Points Has the most games available.
Most of the best games in playability are affordable. Easiest to find. Plenty of different joysticks available, with one that will fit you. Easiest to trade with other collectors Most variety of games. More bad games than good.