I believe the ones that follow buyback program like ICONOMI should have that but the value won't increase significantly unless the profit made by the company is huge and as for second question, then there is DigixDAO, Maker, DASH, Byteball, Monero etc.
So is it recommended to buy coins which have less circulation?
Less circulation of coins makes the value more stable or quietly slow progress, those coin is for long term holding. For me i recommend to buy those coins which the demand continuously increasing but be careful for the coins which only pump and dump that is very risky to invest. To avoid that read the white paper of their project to know if the coin has big chance to increase its value.
Agree with you, as i can see in most of the crypto exchange those coins are quietly stable its value and yes some of those coin are good to hold but they some of them are not totally good to hold for long period of time because slow increasing of demand the slower increasing of value that is why many investors sell those coin and find other coin which is much better that they can able to get much quicker profit.
And also agree that we need to base in their white paper to lessen the risk of our investments. Also i recommend to invest the only amount that you can afford to lose.