I have some CLAM that I want to swap for another altcoin. Clam has some potential for growth, I got it for free, but I am not interested in it.
Which top 25 ranking altcoins are an interesting investment? Additional criterium: has to be supported by a secure multicoin (desktop) wallet, where I control the keys.
Alas, that kinda excludes Ripple, Monero, ... I do not want to install a dedicated app for each altcoin.

Another question. I cannot register on certain exchanges because I cannot prove my residency. Well, I can with my ID card, but not with bills. How can I buy altcoins without buying BTC first on localbitcoins? With BTC so high I don't want to buy BTC just to exchange it for other altcoins and I want to HODL my current stash of BTC.