I've been looking to buy waves with BTC but all the websites i've found so far have mixed reviews so i'm not sure if i should use them..
Please let me know what website you use for buying and selling altcoins
What websites are you saying that has mixed reviews? There are popular exchanges that are good to buy waves and if you want to buy, just buy one of it. If you don't want to use yobit, there are some exchanges that you can use. Bittrex is one of it and as well as poloniex, it's your decision now on where you will buy waves