I would prefer buying ethereum than tron for the mere fact and as what OP said, it is more established and known than that of tron. Although I have heard a lot about tron, I would still choose and prefer the safest coin to invest instead of some coin which is still not that established yet.
So I guess it's a question of if I want to invest or if I want to gamble... because we know that BTC and ETH has value, its a good investment like gold... but If I want to roll the dice and see what I get, I can try tron. You think thats a good way to look at it?