I upgraded from X-E1 to X-T1 and honestly I'm not missing out anything of X-E1. OK, the weight of X-E1 was slightly lighter than X-T1 but that maybe about it. X-T1 focuses much faster than X-E1 - when you get X-T1 you will perhaps realize that X-E1 really was one of the first generation mirrorless cameras, hence super slow focus. I kept updating the firmware but it didn't help too much. X-E1's slowness was killing me. And I know it's not quite related to the topic here, but Fuji X-Series cameras all take great photos in my opinion, even the lowest ranked model like X-A1. The lenses do matter much more, so I second milandro's opinion, that it's better to buy X-T1 used instead of new. You can get the deal like $450 USD or so nowadays. Save yourself some money by buying used X-T1 if you haven't, and get another lens with the money you saved... X-T1 is definitely a great camera, which used to be the flaghship model of Fuji X-Series. I especially love the ISO dial where you can manually expose and preview your slightly overexposed/underexposed images, this is quite inspiring, I must say!