I save up for the trait enhancing rewards pertinent to the individual Sim first, with social enhancement rewards/buffers (Observant, Long Distance Friend) being secondary. Most of my Sims are self-employed and use the consignment store for selling their wares, so Suave Seller is a reward I use often and get early on. I also tend to go for rewards that benefit the whole household, like Fireproof Homestead and the Collection Helper object. I rarely use rewards that manage needs (steel bladder, dirt defiant) and never use money rewards (inheritance, no bills).
