If you're looking for a low cap coin that be purchased at a reasonable price, has a proven community behind it and has been around almost a year...
Spectrecoin [xspec] is you best choice.
It would be fair to say that Zcash and Monero are the most recognised and trusted privacy coins, but they cannot match Spectrecoin for functionality. It is simply THE most holistic privacy coin out there with a low entry price point and massive potential. As more and more governments consider some sort of restrictions around cryptocurrencies, the privacy coins will be the investors 'darlings' of 2018, with Spectrecoin firmly in the mix.