EDIT: It might change when the next BTC bubble starts, but who knows...
Depends what you want. Want to get rich fast, join the PnD ride, but you will have to fucking sell when it's the time (90000 for BC). If you want to gambe, sell high and buy low as always. If you just want to park money in Crypto, buy in low and keep your money in a coin that has slow movement not much change in the price.
BC is not really deep down yet, it needs less than 8 BTC to bring Blackcoin above 12k again on all exchanges but more than 30 BTC to bring it down to 6000. If the pools would start buying again, 12k would be not far.