>>3813557I have x100, the first one. Image quality is good, low resolution sensor is really neat in low light and processing those images feels good because of iso invariance (afaik d3100 isn't really iso invariant, neither was my 50d that i sold to buy x100). I think if we'd want to go into some image quality benchmarks, you'd be better off keeping d3100 and buying it a nice lens, but x100 definitely has nothing to be ashamed of as long as you understand that you're about to buy a 10yo camera.
What you need to fully realize and accept is that this camera is really, really slow. Good example of x100 slowness is that it won't let you adjust manual focus with ring after taking a photo before it gets processed and saved to memcard (3s?) - you can only take another photo or use autofocus. Anything you do, except for core functionality and basic operation (which is mostly done using physical dials) will be kinda unresponsive. It's endearing in a way, it will force you to take your photos different way, but this is definitely not for everyone. If that doesn't sound good to you, get at least x100s.
Other than that, it's great. Hybrid viewfinder is a great, great nice-to-have (fake horizon, grid), digital viewfinder is here for you if you ever need to be a bit more precise, camera is pocketable and makes a great everyday companion, and the way it forces you to take a less soulless/less fast/less perfect approach on photography feels great. Bought it couple months ago and it revived my interest in photography, can't wait to take it somewhere interesting.
