I've been using my buddy's helmet he bought for tracking his car and never used. I've been looking at helmets online to get reviews, pricing, designs, etc. My question is this, is there any brand(s) I should avoid? I want a good helmet, but I'm also not wanting to drop several hundred at the moment, saw a few with msrp $800+... Scorpion and Shoei seem to have great reviews and I've seen many members mention them. There is a GMax helmet that caught my eye, anyone have experience with them?