PERP is one of the contenders in the DeFi margin-trading-sphere.
PERP is backed by Three Arrows Capital, one of the biggest holders in Grayscale; the largest crypto-fund in the world.
It has for now 20x leverage, which is more than enough for most people.
SWTH is another contender, which will have up to 150x leverage; this is also an exchange backed by Three...