I have been using TOS for sometime. From what I have gathered, it has one of the best UI. In particular, I like the ability to create custom thinkscripts in watchlist columns. This allows me to run strategies on my universe of watchlist tickers concurrently - across several watchlist columns. This is very different from running chart based scripts. It’s like having a cockpit for my universe of watchlist tickers. However, I’ve also observed that execution fees are relatively high and the thinkscript capabilities are not as robust as I’d like them to be. I also find that access to historical data is very limited.
Are there other trading platforms that provide these types of custom scripts capabilities for the watchlist columns across multiple tickers with a decent UI? And provide deep access to historical data?
Many thanks for any feedback and/or guidance.