I think TOS is great but some times I want to analyze a hypothetical position that I've read in a book or online. That doesn't seem to be doable in TOS. I also find TOS somewhat awkward for doing what if scenarios. I've heard a lot of good things about Hoadley's software. I like software with a really good user interface and I don't see Excel as being a great platform for that. Is anyone here using both TOS and Hoadley software?