Personally i try not to lie whenever possible, i prefer brutal truth, i especially appreciate it when given to me, because bullshitting me doesn't help me at all, if you tell me the truth then i can learn from it, if you bullshit me, i wont realise there is a problem.

However, when talking with others, i always try to stick to brutal truth, but word it in the nicest way possible, because lets face it, some people cant take radical honesty. Sometimes i will omit the biggest negative and give smaller negative as constructive criticism and suggest an improvement. While its not full on honesty, i feel its much better than just bullshitting someone.