Doc-
What Top-Fire joysticks do you have? I see that Happ Controls carries a top fire super joystick and I know Groovy Game Gear has one as well.
Well through some bizarre twist of fate I actually have both!
I ordered a Happs one early on and then found the groovygamegear at the cheaper price later. Both are 8 ways.
As you might have guessed, the Happs topfire uses the Super joystick base, so it has the microswitches with the long arm actuators on them and a round actuator. I would say the feel is close to a Super joystick - moderate tension and throw, with a pretty continuous transition from sides to corners.
The Groovygamegear stick is a much different design. It has a round actuator that makes direct contact with the microswitches. The corners are a bit more distinct. The stick is actually mounted on a rounded base about 1-1/4" or more wide that sticks out slightly above the control panel.
Comparing the two, the Happs has a longer throw, and slightly more spring tension. The corners are more distinct on the Groovygamegear, but more continuous on the Happs. Both MUST be top-mounted on the panel - the handle is much too short to mount it under a wood panel. Both use the same basic mechanism for the thumb button and have the same handle shape/size so there is no difference there.
I think the Happs has a slightly better feel to it from a pure joystick perspective, but given the price difference plus the fact that being able to feel the corners can be important in many top fire games (i.e. some are clearly designed for two way or four way joysticks) the Groovygamegear may be a better value.
IncrdblHulk7 - I have had success using a top fire on the left and 3 button converted "PC" stick on the right with Vindicators. I just set both thumb buttons to rotate and the trigger to fire.