[Elecraft] SO-239 Connector Selection

[Brett Howard]

Ok figured I'd ask here and see if someone had some input on the
differences here.  Hopefully someone has done more design with these
than I...

My application is that I'm looking for connectors to install on some
high end home made band-pass filters.

83-1R;
http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-SO-239/?qs=sGAEpiMZZMtqi3rrGzC6kucWGwVoNS6TyriIimuNw9A%3d
83-1R-RFX:
http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-RFX/?qs=sGAEpiMZZMtqi3rrGzC6kqBNVAfbUIcAaUNmqqZ3zpA%3d
83-798:
http://www.mouser.com/ProductDetail/Amphenol-RF/83-798/?qs=sGAEpiMZZMtqi3rrGzC6kptFUq3vT%252bWoMcHyGEmWyaU%3d

The 83-1R is a number I've seen a lot in usage and its the connector I'm
leaning toward.  It is also the cheapest of the 3.  I know they are all
going to be good connectors but is there any benefit to going with the
other two versions?  I believe that the RFX version is a commercial
version of the same thing (at only 20 cents more) but I don't know what
the difference is.  Finally the 83-798 claims to be an SO-239A
connector...  I tried doing a search for SO-239 vs SO-239A and in a
quick gander didn't turn up much...  Any input would be appreciated.

Thanks

~Brett (N7MG)