I think that if you are not doing any MS, working towards a bonus, or a goal, then the best daily spending is a mixed bag of rotating and fixed category spending
fidelity amex -2 % or barclay arrival 2.2% if you redeem for travel
usbank flexperks if you redeem for travel
rotating:
mix of discover cash rewards, citi forward, and chase freedom.
Chase sapphire is hard to ignore if you will spend on travel.

as mentioned, this is general advice...not sure specific to you. Basically I would try to get 5% on everything and fall back to 2% on everything.