Hi!
I agree with Jester! No glow driver is needed on any glow engine if it is set up correctly.
I donīt know if the person asking is familiar with the "tank placement rule" or not but here it goes.
"The tank should always be placed so that the center of the tank is in line with carb intake orrifice when the airplane is sitting horizontally" (means in the flying position with tail up high).
If this rule isn't followed you cannot expect a glow engine to run right.
It is also important to choose the correct glow-plug, and that is not using a glow plug with an idle-bar.
Idle bar glow plugs is something of the past (fifties) and should/ought not be used on modern engines if you want good performance! But remember! The problems the questioner tells about is not remedied by using this or that glow plug it's a tank placement problem.

As with all sport glow engines an Enya 3 or OS 8 is a good choice.
Fuel: 5-10% nitro and 20% castor oil or synthetic or a blend of these.
Propeller in this case: 12x6, 13x6 or 14x4 for most planes.
11x8 or 11x71/2 if it's a fast "old school" pattern plane (i.e Curare, Atlas, Blue Bird).