n55 vs b48 reliability

i’m looking to hear opinions on comparison of these engines. I currently have an n55 e92 and i feel i need to get out of my current car. I can’t quite afford a good b58 but i can afford a relatively new low mileage 330 with a b48. My lifestyle has changed and i need something more reliable and durable and comfortable. I have no cold weather package and 2 doors is becoming more of a challenge for me, i love my n55 but im really in no need for speed anymore, i could do with a less power engine if it means i get better daily driving comfort and less stress of repairs and things going wrong. also, I do repairs myself so that side of things with dealer/shop fees does not factor in my decision