Some nice, smooth, consistent quality. Better Call Saul was in my opinion pretty consistent. Single season anime is almost always consistent, like My Dress-Up Darling or Terror in Resonance.
Not dragging on longer than the series needs to seems to be a key point.
Which reminds me - and for OP - The prison drama Oz is great. Quite gritty and ran for a long time. He plays a neonazi in that.