I had done some CPU mining back in the early days, then GPU mining some alt-coins back in the big run up in 2013. I've been out of the game for the last year or so, because the economics just didn't make sense.

I just moved into a new place, and am getting solar installed that will just about net out my electricity usage. What that means is that I should have some capacity in my "base" tier ($0.07 / kWh) to run an asic miner, if it made sense.

To be honest, I don't know where to start. Is it best to buy new miner or get an older miner used? Is there anything coming available soon that would make sense to wait on? Is there anything available today that can be run small scale, and not cost more to run than it makes?

I'm not looking to get rich, it would be more of a hobby thing. But I don't want to run the hobby if it's going to run negative the whole time.