Sam has closed his piano and gone to bed ... now we can talk about the real stuff of life ... love, liberty and games such as Janus, Capablanca Random, Embassy Chess & the odd mention of other 10x8 variants is welcome too
For posting: - invitations to games (you can also use the New Game menu or for particular games: Janus; Capablanca Random; or Embassy) - information about upcoming tournaments - disussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position ... speculation on who has an advantage or the benefits of potential moves is not permitted while that particular game is in progress) - links to interesting related sites (non-promotional)
The Queen is still the most "powerful" piece, so unless there is a positional consideration that favors a Chancellor or Archbishop, one should still promote to a Queen. Of course, if you can promote without your opponent being able to promote, any one of the three would grant you a winning advantage.
P.S. Pawn "promotion" is the standard term. Even in 8x8 chess, there are situations where promoting to a piece other than a Queen is the only way to win.