This is heading I tend to go the route of exact match domains, but a quality expired domain can be a thing of beauty when you find a good one. Here is a simple tip for choosing quality expired domains. This is rather simplified and normally i would go over a few extra factors but for the most part if all you do is follow this tip youll come out with a decent domain 99% of the time. I myself have managed to get some awesome expired domains in the past and have done well with them using autoblogs.
For example i picked up http://three-fires.com as an expired domain and managed to get its Page authority to 61 and its domain authority to 53 over the last 6 months. I dont remember where it started but it ended up costing me under 20$ total so well worth it. Now that its aged and has content it is a solid authority.