I have an SN-10 that I just removed from my panel. It has two RAZ meters plus a remote control and GPS receiver. This is an original SN-10, which does everything the "B" does, but the screen has a bit less contrast (never was an issue for me).

Per Cumulus Soaring, it is possible to upgrade the SN-10 to the SN-10B if you desire to do so in the future (see http://cumulus-soaring.com/ilec.htm)

$1000, including shipping within the continental US.