Here is my two cents worth on this subject...
People who are new to options get bombarded with all this hype about purchasing some very expensive software and then all of these "add on" services to help them scan, etc, etc...
Other people fall in love with the idea of knowing all of their "Greeks" for each position and believing that all of these numbers are 100% accurate, which they most likely are not...For instance, with alot of options you have big spreads...Those spreads alone completely complicate any theoretical options values that most people will calculate as their position risk...
My opinion is that, unless you are tracking dozens of options positions, you probably do not need to get involved with OptionsVue and their pricey software...Some people on here are doing some form of dispersion trading and trading subsets or "baskets" against the index options...For them, it would probably be worth the price, because the calculations are too tricky and time consuming otherwise...
Interactive Brokers already has a decent position risk analyzer embedded in the software...For simple calculations, this is fine and it already has the actual positions loaded, so it is not necessary to input...