Hard to say, because both btc and some altcoins are good. But you need to know, that bitcoin is the best and in my opinion invest on this is always a good idea.
I certainly agree. Both are a good one to invest with, not only bitcoin but there are also some high potential altcoins which are worth to invest. It is always wise to do to diversify your portfolio and not put all your eggs in one basket.
I also agree with both being as equally valuable when it comes to crypto trading etc. BTC is the mother of altcoins but even some altcoins have perhaps surpassed the expected market value and if you're knowledgeable enough you can spot those in trend and spread out to altcoins for some profit.