advisable -
worthy of being recommended or suggested; prudent or wise; "such action is neither necessary nor advisable"; "extreme caution is advisable"; "it is advisable to telephone first"
unadvisable,
inadvisable not prudent or wise; not recommended; "running on the ice is inadvisable"
prudent careful and sensible; marked by sound judgment; "a prudent manager"; "prudent rulers"; "prudent hesitation"; "more prudent to hide than to fight"
wise having or prompted by wisdom or discernment; "a wise leader"; "a wise and perceptive comment"
best,
better (superlative of `good') having the most positive qualities; "the best film of the year"; "the best solution"; "the best time for planting"; "wore his best suit"