They're all pretty similar, just need to decide if you have a color preference or if you are certain you want open face v. just the eyeport. Alpinestars makes great stuff but can be more expensive. Not a lot of difference as they all have to meet the same standards (assuming you get nomex.) I currently have one from Stand21 and love it because it's lighter than the other ones I've had from OMP, Simpson and others.
If all you're after is managing smell/sweat, mine still smell and make me sweat more so no benefit there. Only reason I've used them is for fire protection when racing open wheel, not something I use for track days.
With all that said, if all you want is managing sweat, I use this on my bike: