Could you describe how you would actually switch it from 4 to 8 way? How much trouble is involved?
I am assuming you mean how to switch the super from 8-way to 4-way?
That requires changing the actuator on the bottom of the stick, which isn't something you are going to want to do on the fly.
See, i would get a dedicated 4 way, but i KNOW that I'll do that, then end up adding ROMs that require 8-way, and I'd kick myself.
You will want both a 4-way and an 8-way if you want anything remotely authentic.
If you just want to play games, and don't need them to perform at peak efficiency, then you can probably get by with an 8-way only.
Playing 8-way games with a 4-way is even more frustrating than playing 4-way games with an 8-way.
I saw on some site, a joystick that is adjustable from the top, by lifting and twisting the handle...
Check out
Ultimarc for that.
Groovy Game Gear sells one that has a lever on top to change modes.
What is the best way to mount it on my control panel?
Securely.
Seriously though, it's a matter of preference.
Most people mount them from beneath the control panel, but there are alot of ways to do even that.
You can mount them from below with screws from below.
You can mount them with carriage bolts all the way through.
You can mount them with T-nuts sunk into the top of the CP.
I'm in the minority, but I prefer a laminated CP.
My usual method is to use a 1/4" top skin over a 3/4" sub-layer, with the stick screwed in from the bottom to a T-nut.
I sink the T-nuts into the 3/4" layer, then laminate the 1/4" layer to it.
This requires aftermarket handles, but lets you have the dustwashers 1/4" under the CP surface, like they were on most dedicated cabinets.
The handles are available at Groovy Game Gear for most sticks.