I know this is a old topic, but I still not sure what is the best metrics to base on to choose the right domains? I will list some metrics I want to ask below: DA, TF: how much is good? Are they reliable? I read some posts here and elsewhere they have very different say about this. some says should choose TF over DA, some say TF is useless and choose DA. Ref Domains: How many is good? I often choose 10. but is it too low? or should I look for many Ref. domains as much as possible? Backlinks: how to determine which is a good backlinks, which is spam ones? Does the backlinks come from not-popular TLD considered spam? If domains have 1-2 authority backlinks, but less than 10 Ref. domains. should I choose them? Anchor text / History Archive : If the domains have backlink from very authority site, but then later it was used for some Chinese/Japanese website, is it good? I've seen A LOT of them. Should I avoid shop related domains? Does related niche anchor text / backlinks required?