There are well over a staggering 1-billion results in Google on a "decision" search.
Some popular related searches are about; make financial decision today, best making money decision, a decision to do better, best investing decision making, employment & jobs decision, make the best dating decision, decision for the best, best trading decisions, synonyms decision making, trader decision making process
Decision.best is available and on-sale due to its owner retiring soon. In fact, a desire for retirement income is a reason the owner can do an interest-free monthly payment plan (and a buyer's benefit).
P.S. No worries about using the domain while paying. You will have the same use as if you paid purchase price up-front, and be able to use your own DNS immediately upon making your first payment.