Just to declare it first, i am 99% XMR and very recently 1% PIVX... I saw bitcoin pre 2010 @ <$1 a coin and was tempted to buy but was only 14 at the time and had little way of physically paying for the coins, i mined them for a couple of days but it worked out @ around $0.50-$1 per day and at the time didnt see the point.
I started to re-look into, crypto in August 2016, and have made 400% gains through XMR... Honestly, I could have really picked any-one of top coins and made gains but I really do see a good future in XMR through the privatization use-case of it. I think XMR will be primarly used as the holding tank/Bank/mainwallet for peoples currencies.
Remember, in regards to DASH there were a hefty "ACCIDENTAL" Instamine/premine, there will become a point when that portion of the coins gets dumped, and is detrimental to the ecosystem. I like the instant transactions, but this can be linked to various other coins through the lightning network, dont ask me what its about, i just know its a thing and allows next-to-instant transactions that can be added to other blockchains. Also ,DASHs private send, is only the same as BTC mixin, which is still under dispute as to how traceable, and or private, it really is. Dash should be mainly be utilised, in the future, as the cash-in-hand
ETH, I feel, is the future in regards to the contracts making area through Crypto, not cash or main wallet/bank and is undervalued imo but i thought BTC was overvalued @ $1 so who am I to judge.
Zcash is a joke with heavy heavy premine and not even worth investing in, although the tech is strong, i think the premine is just too much to overcome.
25% in PnD is abit high... I'm guessing your not speculating with too much capital because no one in there right mind who had $100,000 in investments would throw around $25,000 on turn of the hand, luck based, playouts.