I have been riding for 35 years. I have owned expensive Shoei helmets and cheaper AGV, Arai, Bell, etc.
Until recently, for the last five years, I wore the most comfortable and quietest helmet I have ever owned. I bought it from Aldi for $70 Australian.
People questioned my choice, but carrying certification for all of the current helmet standards, the helmet was on the same playing field as an $800 Shoei and, IMO, outperformed them.
I now run an RJays Carbon Fibre helmet. It is the lightest helmet that I have ever worn. Snug fitting, but a little more wind noise than I have been used to with Aldi helmet.
Sena Cardo is the only comms system that I have used and it did what it advertised. The only issue I experienced was the breakdown of the foam speaker and microphone padding, over the years.