Getting ready to buy my very first iphone next week. I will be getting the 3GS. I could save $50 by buying a refurbished phone online through ATT. Has anyone experienced bad things with Refurbs? I really don't have a problem with them but i've never dealt with apple so thought i'd get advice from you guys who know alot more than I do about apple. Also if I get a refurb does that give me a better chance at getting a 3.1.2 ?