I only have the 2.5 switch in Lux but I'm not a fan of the gold/silver plating so give me the 2.5 switch with a brass or aluminum bronze button and the negative connection from the v3.
I like that the v3 has an aluminum bronze button, that way I don't have to worry about wrecking the plating (I still gravitate towards the non-LUX v2.5 top cap and switch). I still have a spare unused v2.5 LUX button kit just in case (I'll probably never use it).
I got lucky when I got my Lux 2.5 second hand and the plating on the button was in really good condition. At least I think it's still plated. A little Neverdull has brought it out about as good as it's gonna get.
^Yep, no polish over Gold, Silver, Rhodium etc. platings. Just a lukewarm soapy wash is all it needs from time to time.
And I'm just the opposite ~ I love Gold/Silver plated contacts, rather than plain brass. It just makes my life a lot easier. As of now I don't purchase any mod if its contacts are not plated by precious metals.
Ya know, I'm actually starting to question my switch. It looks like it's already showing tarnish.
The original owner mentioned having the switch replaced due to it auto-firing out of the box.
Is there a way to tell a 2.5 Lux switch from a regular other than the gold plating? Can I just get the Lux replacement pack to put it back to original?... if it ever comes back in stock.