The last DSLR I had was a Nikon D50 - purchased while living in Japan sometime in 2007. Sold it after returning to the USA, and used my old Minolta SRT and a combination of point and shoot cameras ever since. Been bumming my girlfriend's Canon T2i for the last few years, and finally decided to get something small to take with my on riding trips...
Wasn't sure if I wanted to take a huge plunge on mirrorless, so I recently purchased one to 'try out'.... It arrived last week - a Sony NEX-5N off eBay which was ~$160 w/ 18-55mm kit lens, with around 6000 shutter actuations - so rather lightly used. Outside of the slight annoyance of not having an actual viewfinder, it's a hell of a little camera. I've got a bunch of great old Minolta MC / MD lenses from my film setup lying around, and there's an adapter out for delivery in the mail today that'll let me put them on the NEX-5N. That's one nice advantage of mirrorless over DSLRs; much more simplistic to adapt older glass (of which eBay is FULL of stellar examples, for cheap) to this camera.
One of the perks of the Sony line is focus peaking, which gives you a colored shading over the parts of the picture that are in focus... which makes it really, really simple to focus older lenses on the LCD. I know other manufacturers have started to incorporate that into their feature sets as well - Fuji has it on some of their nicer mirrorless cameras, if I recall...
So far I'm quite impressed. We did a 'photo-off' with the Canon T2i we have (kit lenses, mind you, but same shots, same/similar settings/iso etc etc) and the Sony
soundly beat it in image and video quality. The focus peaking feature was a huge help when it came to macro shots.
JPEG processing with Fuji's line tends to give nicer colors out of the package from what I understand, but that's not something that you can't alter yourself by shooting in raw, and adjusting. Sony's JPEGs aren't bad, either, FWIW.
For size comparison's sake, here's the NEX-5N next to the T2i - both with the 18-55mm kit lenses. The A6000 is a little bigger than my NEX, but it'll still come in under the T2i when it comes to bulk, and still fair much better than a traditional DSLR.
I like this thing so far, and can definitely see myself buying more mirrorless stuff in the future. Going to go nuts later today once the mailman gets here and I can adapt my old Minolta glass, which are *great* lenses in of themselves.