So which one should i choose, any 10x coin for the future?
If you want to invest for the long term, it would be better if you invest in coins that have potential even though the achievement is not 10x. Maybe a coin priced under $10 is more appropriate for the way you invest. For me, coins that have the top 100 category in coinmarketcap are the best coins, although there are some coins that raise our suspicions to survive.
It doesn't matter how the coin's price is, the price below 10$ doesn't mean it can go up in price anymore, the coin's upside potential depends on a lot of factors, supply is also important, the potential level of the project...Only then can it assess whether it has a chance to increase in price or not.
In case OP wants to claim 1 coin maybe x10 then I can say we are all looking for that coin too so no one can give you advice, the best advice is to choose one of the top coins on the market and do your own research. If you want x10 from 30k $ then you have to accept to lose 30k, because investing in altcoins that you don't want to diversify is very risky.