You should try both if possible, they are VERY different boards,
steelseries has linear 70 grams activation-force and 4mm actuation,
the razor tactile 50 grams and 2mm .
If you are used to a clicky-board you may
easily dislike typing on linear switches, but they are great for gaming IMO
No, the steelseries boards don't have metal-chassis, but they are heavy and stiff .