I really liked Karls cage, easy to get into( After Karl showed me hows its done). And once in, I don't remember banging into it out on the track,no bruises the next day. The build quality is excellent, nice tig welds, nice bends. Its the safest I ever felt in a 7.
And it has those killer Tillet seats, which fit me like a glove. Which is a nice feature for
two guys well over 6 feet. It may be expensive, but your worth it.