Monero is definitely the most solid coin in the list and will surely have a long life...i don't like Verge that much..the developers are not keeping their promises and in my opinion it is just a big pump.....Xspec looks promising but as a DeepOnion investor and believer i think Onion is the best choice with the highest potential to be expressed in the very next future...
The community is growing everyday more and more..the devs are vey active and have already released some unique features like DeepVault which is a storage for file hashes on the DeepOnion blockchain..and the upcoming Android wallet that will allow holders to stake 24/7 with their mobile phones...none of the coins that you have put int the list offer this kind of services...and this tells me clearly that my choice is the best one