I have an ETH address and BCH address, both linked to my Ledger, an Obsidian desktop wallet, and a Safex desktop wallet. BAT, LINK, ZRX, and OMG are all ERC-20 tokens so they're just sitting on the same eth address.
I have accounts on Uphold, Coinbase, Bittrex, GDAX, NovaExchange, Liqui, Binance, CoinExchange, Changelly, basically because I've done a gazillion trades and messed with a lot of ####coins.
I don't really know enough about Iota/Dash/NEO to offer an opinion on. Ripple had a former Fed chairman as guest speaker which is about as tonedeaf as it gets in crypto.
Monero is the true dark market coin and to my knowledge completely untraceable. Once I get back in I plan on going 40% BCH, 30% ETH, 30% XMR for the foreseeable future. All very strong marketcaps with very different use cases.
The t0 ico by the Overstock CEO looks pretty cool too:
https://tzero.com/