Norton works great in my experience, it's not what it was a few years ago. Light on resources, fast, and easy to use. A good alternative is ESET.
MSE did not serve me well, it let malware through on my parent's PC. I also had an unsatisfactory experience with Bitdefender on their PC, it simply stopped starting. I reinstalled and had the same issue. Switched to Norton ... no problems since.
2011 BMW 335i E92 - Le Mans Blue, 6MT, M Sport. JRZ RS Pro, Quaife LSD, BMW Perf Exhaust