I won't suggest you a ETH fork as all of them are useless. Though ETH itself is a fork from ETC, they have become the largest utility coin.
Every other ETH fork after that are just a gimmick to gain popularity. And good developers have stopped forking coins.
If you want competitors for ETH, new chains like Cardano, EOS and to some extent Tron could be a good option.
That's certainly true, mate. Most ETH forks are indeed useless. I'm surprised that this has not been the case with some Bitcoin forks (such as BCH and BSV). One thing for sure is that forks have lesser value than the original project. This means that no matter which features or technology a fork has, it could fail in the long run if there's lack of demand on the market. Real use cases for the mainstream world is what matters here.
Speaking of ETH-based forks, I guess that the only one that's best is ETC. The rest will simply go down the drain over time. Forks like Expanse, and Ubiq have promising features but they lack mainstream adoption. As far as alternative smart contract platforms go, I believe that Cardano has a better chance of becoming a real contender against Ethereum. At least, it's not an ETH fork, with its own code from scratch. Some say that TRON has "plagarized" Ethereum's whitepaper. I've been using it for a while, and I have to say that everything is the same as ETH except for the part of the DPoS consensus algorithm.
I think that the best option here is to buy and "hodl" Ethereum Classic (ETC) for the long term. It has reached new milestones in development after it came into inception in 2016. Now, ETC is a store of value just like Bitcoin with only 210 million coins that will ever be mined on the Blockchain. The total supply vs current price on the market, shows us that ETC is quite undervalued. But who knows? Maybe ETC turns out to be a good long term investment as miners from ETH switch to the ETC chain. After all, the main ETH blockchain will become a full-fledged PoS cryptocurrency. If active development continues on ETC, it could turn out to be widely successful over time.