The worst thing to do is invest in mining equipment when you think this is the bottom just to sell it later on, the price appreciation on mining gears is a lot lower than on the coin itself, due to the following reason.

1- Difficulty rises, the profitability doesn't increase proportionally with price, and thus the miner's value doesn't too.
2- The miner loses value due to the efficiency race, right now his miner is one of the most efficient gears, a year later, it won't be, which makes it lose value as well.
3- The miner's age, the longer it sits there, and the more value it loses.

Of course, this changes if it's a matter of selling the miner and keeping the fiat, assuming this is the bottom, then keeping the miner will outperform keeping cash, but if it's the bottom then BTC > mining gear.