Now i would surely recommend you to buy 10 eth. If you noticed btc has almost become more than $4500 while eth is still low for you to double your investment it can take time while for eth it's still around $300 and many are speculating it can become $1k by end of this year with 10 eth you can triple your investment in few months.
1 Bitcoin or 8 Bitcoin cash. They could be more valuable.
You sure maybe you are right about bch but his question was between eth and btc and if you compare the profitability well btc rose from i guess $7k or something around this price and eth was $300.
Today btc is $10k let's assume he would have made 2 times the profit but eth had increased by 4 times so well if he did follow my guidance he would have $10k currently.