For the most part I like b3sTiA_es's picks the best... and they are most like mine.
As far as my favorite maps:
de_dust2
de_prodigy
de_cbble
de_inferno
cs_office
de_aztec
awp_map
cs_rio (haven't played in a while but it's a VERY challenging map, so is cs_office... hard for T's)
I would also like to add de_nuke.
I think most of you are over-appraising de_dust. It isn't that great and is only popular because it is played on most servers because it is a fairly large map. If you have a good rushing Terrorist team (through the tunnel) they're almost always going to be the dominant team... particularly if the freezetime is set to '0'. If they win the pistol round (and for some reason, most people set the starting cash to more than $800, normally $16000 which in my opinion is dumb... instant awping) then they're going to keep winning for at least the next two rounds because of the high cost of the m4a1.
Don't be shy, try some other maps. I recommend de_cbble and de_prodigy, and especially cs_office/cs_rio (extremely challenging maps).