I know that there were a number of you who loved the Think or Swim Platform [TOS] and found it very difficult to find a tool/platform to match it, however, Tom Sosnoff has since created Dough.
With Dough, you can search for implied volatility and probability of success. I don't think you will be able to beta weight to SPY and measure your Delta's though. If you know of a good platform in which I can do this, please let me know!
But yeah, check out Dough people. Also, if you need help in regards to investing, and want to know where to start, Tom Sosnoff has created Tasty Trades... definitely a game changer.
Feel free to post your reviews here, if you think that this was helpful!