LUN > https://coinmarketcap.com/currencies/lunyr
GVT > https://coinmarketcap.com/currencies/genesis-vision
Both of these coins are listed on Binance which is a huge advantage for them, so even though their market caps aren't that great, at least they are listed on the biggest altcoin exchange and have pretty good volume.
I would get into Lunyr if it's under $15 for a short term investment. GVT has been on an uptrend since its inception and I think it's probably due for a dump some time soon. I wouldn't invest in GVT at all.
Lunyr has potential to get into the 100-200 market cap range, if it can get a healthy pump soon. Overall, LUN seems like its price bottomed out at $7.5 and isn't going back there for the time being. Expect a pump in 2-3 months for LUN imo.
GVT and LUN are both good investments, however I definately would invest in GVT. Do some research on GVT and you will see it will take off with a short/med term hold!