I got a survivaltopics firesteel, they are great, and there new scrapper is awesome.
I received the old RAT firesteel as a promo from Derrick of KSF and I really dig it, its very comfortable to use, you have a great handhold, plus the compartment is great to put some petroleum jelly cotton bals or whatever tinder you find.
Seriously both firesteels preform about the same but my advice would be the RAT cutlery one, its easier to use (especially with gloves on) and the ability to put tinder in a sealed compartment is a great advantage, definitely worth the bucks.
I have tried lots of firesteel and all of them that had handles, either broke or unglued itself, that is all except the RAT one because theirs is kept in place by a screw. The firesteels with no handles work great but I find that I can't use gloves with them.
My best setup I found is a RAT Cutlery firesteel filled up with Petroleum jelly cotton balls with a firesteel.com scraper attached to it.
RAT Pack #75
KTA