Don't do the trading route though. If you lose it, you lose it all. If you go hardware and lose it, then at least you have the hardware to sell back.
I've heard this quite a bit, and it's true to an extent... However, if the "bubble bursts" - do you think the market will support the thousands of 7950s and 280x's that would end up on eBay? You will get something, but it will definitely be a buyer's market.
A prescient miner would have worked out the break-even for hardware, so when the bubble bursts on hardware, he will have not only the mined coins, but the residual value in the hardware to resell. it doesn't matter if you get 50% or 25% for a used card (it's computer equipment; it's supposed to depreciate) to me anything on the reseller market is pure profit, just like any coins made after i've broken-even on hardware.
the miner who controls costs has more optionality than the non-mining speculator when either the hardware or the crypto bubble bursts.
vvv that too vvv