I too prefer the wireless glo ignitor because of no wires close to the prop. Do get one that locks on well though as if it comes off into the prop unpleasant things happen. Do be careful in using the glo ignitor that plugs into your power panel, it does NOT provide 1.2 to 1.5 volts to your plug but puts 12 volts into it for a short time followed by a period of no voltage so the average voltage is approximately 1.5 volts. i.e. it is a chopped 12 volt signal with about a 10 millisecond on time and 100+ milliseconds off time. The duty cycle is controlled by the adjustment on the panel to get a higher average voltage if necessary. You can not see this with a normal meter, you need an oscilloscope to view it. If the internal pulse width circuit fails (this is usually a LM555 chip), you will get 12 volts and blow your plug.
As far as prop balancers go, if you are using the fiberglass or plastic type props, you won't need one. Most of these props are quite adequately balanced. If you are using wood props, you will occasionally get one that is quite a bit out of balance.