No one can (should) suggest any one helmet model to you. That said, I find the quality of Arai, Shoei, AGV, and Shark helmet manufacturers to be top notch. KBC, HJC, and Nolan are okay too.
Regardless of whether the helmet is for track use or road use, the most important thing is that the shell shape matches your head shape. No one helmet brand/model line will fit exactly like the others, so it is best to try several brands and models on to compare. One brand will always fit you better than the others. If you aren't comfortable in the helmet, you'll hate it... no matter how expensive it is.
After that, it is a matter of establishing how much you want to spend on things like higher end: liners, shell materials, ventilation systems, paint, etc.
If the helmet doesn't need many road manners, consider going for a lighter/louder race-style lid. You should wear ear plugs, of course. It can get hot out there, so a good ventilation system and washable liner are nice to have too, but none of this is necessary.