I think NANO coin will be best for hodling for bull run. If we compare it form it's ATH (All Time High), almost 12x from current price which i think think higher than other altcoin rather than bitcoin. So you can decide according to this.
This actually a good advice !
The tech behind NANO is likely the next version of blockchain, so NANO should go back when the market go back up.
In the past, NANO price go down because of the "hacked" of an exchange (the guy tried to sell as much NANO as possible) and also the bug, I guess this will not happen in the future.