I'm from Turkey, where Galaxy S hasn't been introduced yet. Next week, I'm going to US and willing to buy either Vibrant or Fascinate (unlocked version); but there are some questions and concerns that bother me. -I'm concerned that if I will be able to use my phone in Turkey. Does the carrier(verizon or t-mobile) block network or i don't know, anything at all that will prevent me from using properly in Turkey? -Will I have a problem downloading upgrades or any app? -Also, I've read that Galaxy S versions which pre-loaded with some carrier apps have some performance issues, such as lagging, not being so smooth, etc. (I think they were Singapore versions) Since vibrant and fascinate will be pre-loaded with some apps, do they influence the phone's performance? I will be very pleased, if anyone can answer my questions.