Hi there!
There are alot of websites you can check out for ROI, price and masternode colleteral.
Websites as masternodeonline gives you a good view of the projects and there specs.
One little tip, check out DarPayCoin if you are looking for a ROI of 3000+ atm. This ROI is so high because the project just started, so you can obtain maximilum profit out of it!
Also if you havent alot to spend, check out GenesisX(GSX) or Dividend cash (DVD) or Quantis(QUAN). These coins are on sale right now and have a great dev team and roadmap, check them out if you like!!
Greetings!
