Had to ditch my level 11 Scoundrel from the previous weekend (bugged/broken), but managed to get to 25 on a new Scoundrel anyway. Ended up with my Speeder on Tatooine (as it should be!). Tatooine looked greatit just felt "right". Much better than desert zones in another popular MMO.
The Scoundrel was a lot of fun, too (as Scrapper spec): high burst, lots of tricks and very funny dialog. Super fragile though, especially since you need to be in melee for your key abilities.
I did originally plan to play a Scoundrel at launch, too, but I'm leaning heavily towards a Shield-spec Vanguard. Guard is seriously good in PvP and tanking is forever popular in PvE (and challenging, too). Plus, Harpoon is hilarious in Huttball games.