Reef Encounter (look bland but...)
prince of florence i have a copy waiting for me at store but im not sure?
homesteaders ( i have this 1 on radar for long time)
LORDS OF VEGAS,
Brass, (scared of difficulty)
Merchants & Marauders
Steam Barons (really like steam)
Tinner's Trail (any good 2 player variant)
Vasco da Gama
Fauna (just a ?)
galaxy trucker big box (girlfriends favorite game)
Stone Age (not sure in the long terme)
im playing most of time with girldfriends
who is able to play porto rico in english but not agricola (only because of language barrier)
Eurojuegos Buenos Aires
Well, you've got quite a mix here, so I'll say go with Homesteaders (its cheaper and has less text than princes).
Else, you can read the users personal comments on the games to give you more insight. I think some of them have been remade with fine results (Ra, Brass). I remember also a geeklist of games that ousted other games that can help you.
Or just buy them all
Definitely Lords of Vegas once it comes out. Tons of fun.
Markus Hagenauer jr.
My favorit from your list would be Brass. It´s heavy, but not to difficult to play.
If you prefer it easyer, I´d reccomend Stone Age.
Or maybe Fresco. It has quite simmilar weight to Stone Age, but it comes with some expansions included. But I´s say Stone Age does not get boring fast too.