>>61293463 (OP)
1) im a quant (math MSc w/ focus on SDEs & option pricing)
2) most quant strats are really boring (eg index/basket pricing, which just needs volume and a fast internet connection)
3) there are more sophisticated quant trading strats, but even those are still actually pretty straight forward. see factor investing (AQR is big in this)
4) there is very little really arb-free money in the game. many prop hf are statistical arbitrage, which works .. until it doesnt.
i much more like hf that do not rely heavily on quants, e.g. bridgewater (macro) or odey's funds (event-driven hf). pure quant hf are boring af
one of the more impressive hf is probably virtu financial and XTX, the first bc they rarely lose money and the latter because i know the two guys who run the shop are really, really smart players (although its more of an exchange but its run like a quant shop).