ETH is quite cool. I'd pay as much as I can if I were you. When they get to proof of stake everyone will want to hold some of that ETH, it will be a big thing to have 100-200 Ether since you'll be able to stack them and validate transactions, which means you can essentially get paid just for holding Ether, something which is quite cool. Instead of holding stocks and getting paid dividends each quarter, you'll be able to receive something similar to dividends by securing the network. That's so much more cooler than anything that is out there traditonally and I think people are missing the big picture. ETH will be one of the biggest projects and companies ever, and it will be thanks to the openess and the open-source policy it has towards every integration they are doing.