Well the Ppercs glossary is known for its inclusiveness (

), so, I'll probably nominate biromantic, homoromantic, and heteroromantic to be added (while retaining biamorous as an alternative word for biromantic). We'll see if anyone votes against the additions; Ppercs isn't a very busy site so I'm going to try to give 'em awhile to vote.
By the way, I kind of had a bunch of changes "piling up," so I suddenly figured I'd best implement them before I started making mistakes (and I've been known to make mistakes). So, I already added the new definition for biamorous as of yesterday. Don't know if it matters, but thought I'd let you know.
As for which words are prettier, beauty is entirely in the eyes of the beholder.