I am trying to get report for the below mentioned criteria. Please tell me should i create segment or calculated metric and on what logic ?
Registrants 1 [reg 0-10 days ago]
Registrants 2 [reg 11+ days ago - 12mos]
Registrants 3 [13+ mos ago since you registered]
Buyer 1 [1 purchase & you've purchased within 12 mos
Buyer 2 [2 or more purchases lifetime purchased & you’ve purchased made at least 1 within 12 months]
Buyers 3 [13 - 24 mos ago since your last purchase]
Buyers 4 [25+ mos ago since your last purchase]
It sounds like you're trying to build audience profiles based on when they had registered/bought. If so, then segments makes the most sense to use, so that you can find all behavioural data for each profile.