Post War O-22, Best choice. Can be had for $10 bucks sometimes, take 'em apart , clean 'em up, almost bulletproof !
I have 2 Lionel 5132 switches that were made in Honk Kong, Got them about 40 years ago and have had no problems.
I bought 3 brand new O-22 switches, made in China back in 2009, Junk ! Had track down and ballasted, had to rip 'em out, and replaced them with some old O-22 switches. The electric contacts for the non-derail was cheap tinfoil, which wore out after only a few months.
Steve